df_cat

df_cat
Catalog 6131
DF / DFB / DFC
DOUBLE WIDTH – DOUBLE INLET
FORWARD CURVED FANS
FOR ORIGINAL EQUIPMENT MANUFACTURES
SERIES 1600
1/98
APPLICATIONS AND AVAILABLE TYPES
DF - DFB - DFC DOUBLE INLET FANS
DF centrifugal forward curved Fan Assemblies, Kits
and Parts are designed to furnish original equipment
manufacturers (OEM’s) with low cost, efficient,
dependable air handling components. Widely used
and accepted throughout the industry, these fans are
the standard of comparison for many applications
including:
• Ovens & Dryers
• Finishing Systems
• Heat Exchangers
• Washers
• Heating &
• Orchard Spraying
Ventilating Units
Equipment
• Cooling Towers
• Centrifugal Unit Heaters
• Air Conditioning Units
• Evaporative Coolers
• Evaporative Condensers • Air Curtains
DF fans furnish the original equipment manufacturer with the variety necessary to match all require-
ments.
A wide range of sizes are available with volumes
from 150 to 88,000 CFM, static pressure to 8” w.g.,
and temperatures to 750˚F with steel construction and
1000˚F with stainless steel construction.
Fan parts and Kits suited for multiple arrangements
or complete ready-to-install assemblies can be supplied to furnish maximum capacity in minimum space.
Many finishes and metals are available for protection against corrosive conditions.
All fans can be constructed from mill galvanized
steel (standard), stainless steel, aluminum, monel (nickel-400) and other metals.
DF fans feature typically heavy DF Fan Services
construction for assured performance and long troublefree life. All fan wheels are balanced both statically
and dynamically.
DOUBLE INLET FAN TYPES
Type DFB. For more compact installations — moderate
outlet velocities — minimum shaft diameters.
Type DFC. Wider housing for low outlet velocity requirements — typically higher efficiency than type DFB.
• Centrifugal forward curved design for quiet operation.
• Double inlet wheels for single or multiple fan arrangements.
• Eleven standard sizes: 6-1/2” through 26” diameter.
• Typically lower efficiency than DFC.
• Centrifugal forward curved design for quiet operation.
• Double inlet wheels for single or multiple fan arrangements.
• Eleven standard sizes: 9-3/4” through 32-1/2” diameter.
• Wider housing than Type DFB, but same side view
dimensions and fan wheel.
FAN ASSEMBLIES - KITS - PARTS
FAN PARTS — Components for assembly in customer’s equipment: wheels and housings, wheels only,
housing only, housing sides and cutoffs, cooling
wheels, cooling cones, etc.
FAN KITS — Ready to assemble in customer’s equipment including: wheels, housings, shafts, bearings,
cooling wheels and cooling cones.
DFB - DFC DUPLEX FAN ASSEMBLIES —
Complete fan assembly consisting of two (2) double
inlet wheels and housings on a common steel shaft,
with cast iron pillowblock bearings, and a common
painted steel frame. Size 2 Type DFB Duplex and sizes
1-3/4 through 2-1/2 Type DFC Duplex fan assemblies
consist of two complete fans with shafts and frames,
coupled with a flexible gear coupling. Custom assemblies are available.
DFB - DFC UNITARY FAN ASSEMBLIES —
Complete fan assembly consisting of one (1) double
inlet wheel, housing, steel shaft, cast iron pillowblock
bearings, and painted steel frame. Available in all sizes
of Type DFB Fans and DFC Fans for pressures to
approximately 1-1/2” SP. Custom assemblies are available.
DFB UNITARY ASSEMBLY
2
DFB DUPLEX ASSEMBLY
FEATURES OF CONSTRUCTION
TYPE DFB HOUSING
TYPE DFC HOUSINGS
DF WHEEL
Size 3/4 thru 1-3/4
Note: The Type DF forward
curved blade wheel is used
interchangeably in type DFB
and DFC housings.
DF WHEEL WITH REINFORCING
RINGS AND BRACE RODS
Sizes 1/2 through 1-1/4 — 48 die formed blades
either side of centerplate, with integral tenons on
blade ends. Tenons project through slots in rims and
centerplate and are staked in place.
Sizes 1-3/8 through 2-1/2 — 60 die formed
blades either side of centerplate (48 blades, sizes
1-3/8 and 1-1/2 ). Blades have flanged ends which
are riveted to centerplate and rims.
Standard Hubs are cast iron, “Huck Bolted” to
centerplate. Available in all English and metric bores,
with or without keyway.
Size 2, 2-1/4, 2-1/2
Standard Housings are fabricated from heavy
gauge mill galvanized steel and spot welded together
for long service and freedom from vibration. Inlets
are die-formed or spun in housing sides. Wheels are
inserted in housings through outlet. Housing design is
based on laboratory tests for maximum efficiency
compatible with compactness. Sizes 1/2 through
1-3/4 have scroll sheet spot welded to housing sides.
Larger sizes employ a standing seam scroll joint spot
welded to housing sides.
FINISHES AND SPECIAL METAL CONSTRUCTION
Standard Construction — Mill galvanized (zincgrip) steel construction with cast iron hub. Maximum
temperature 500˚ F.
High-Temperature Construction — Steel construction with cast iron hub, painted with one coat of black
silicone based paint. Maximum temperature 750˚ F.
Spark Resistant Construction — Ferrous and nonferrous metal combinations using aluminum, and
monel to meet AMCA “A”, “B”, or “C” construction
requirements.
Aluminum Construction — Available for wheels
and housings for spark-resistant applications with
either cast iron or aluminum hubs.
Stainless Steel Type 304/316 — Both wheels and
housings are available for corrosive and/or high temperature applications. Maximum temperature 1000˚ F.
Monel (Nickel-400) Wheels and housings available. Monel wheels are also available for spark-resistant applications where pressure or temperature precludes use of aluminum.
TYPE UNI-COMBUSTION FANS*
Uni-Combustion fan assemblies and fan parts,
incorporating SWSI centrifugal forward curve bladed
wheels in fourteen (14) diameters from 6-1/2”
through 32-1/2”, are designed for industrial use, such
as supplying combustion air for burner applications.
Available in Arrangement 4. Complete assemblies
and / or parts for incorporation into various systems.
Inlet volumes from 200 to 24,000 CFM at static
pressures to 10” W.G.
UC WHEEL
ARRANGEMENT
4U ASSEMBLY
ARRANGEMENT
4E ASSEMBLY
* ASK FOR BULLETIN 18001
3
UNITARY FAN SELECTION
FAN TYPE SELECTION
Type DFB — For slow speed, more compact, moderate
outlet velocity requirements.
Type DFC — For slow speed, quiet, lower outlet velocity
requirements, typically higher efficiencies.
SIZE SELECTION GUIDE
Static
Pressure
In. W.G.
Quitest
Range for
Air Handlers
Most Economical
Range for
Industrial Units
Outlet Area
in sq. ft.
Min
Max
Min
Max
Fan
Size
Type
DFB
Type
DFC
1/4
1/2
3/4
800
800
900
1600
1700
1800
1200
1400
2200
2400
1/2
5/8
3/4
0.36
0.53
0.88
1.04
1
1 1/2
2
900
1000
1100
2000
2000
2000
1600
1800
2000
2600
2800
3000
7/8
1
1 1/8
1.34
1.53
2.22
1.62
1.85
2.62
2 1/2
3
3 1/2
1200
1300
1600
2200
2400
2600
2100
2200
2300
3200
3300
3400
1 1/4
1 3/8
1 1/2
2.44
3.00
3.53
2.88
3.52
4.16
4
4 1/2
5
1800
2000
2200
2800
3000
3200
2500
2600
2800
3500
3600
3800
1 3/4
2
2 1/4
4.77
6.23
5.69
7.39
9.35
6
2400
3600
3000
4200
2 1/2
11.52
FAN SIZE SELECTION
The Size Selection Guide shows the normally used
ranges over which DF Fans perform satisfactorily.
Example in use of Size Selection Guide — Select DF
fans for a 2-fan air conditioning unit, having a volume rating
of 6,600 to 9,000 CFM with total static pressures ranging
from 1/2” to 2”.
1. Since this is to be a 2-fan unit, each fan handles 3300 to
4500 CFM: average = 3900 CFM.
2. From Size Selection Guide at 2” SP for an AC Unit application, recommended OV = 1,100 to 2,000; Avg. = 1,550
ft./ min.
3. Approximate required
fan outlet area = Ave. CFM = 3900 = 2.52 sq. ft.
Ave. OV
1500
4. From the Table of Outlet Areas listed in Selection Guide,
the nearest selection would be a 1-1/8 DFC having an
outlet area of 2.62 sq. ft.
5. Check the actual outlet velocities for the full desired range
of volumes and pressures to see if these come within the
recommended limits.
Min. Volume = 3,300/fan; OV = 1,260 - OK at max. 2” SP.
Max. Volume = 4,500/fan; OV = 1,720 - Just slightly above
recommended max. of 1,700 at 1/2” SP.
NOTE: Other possible selections falling within recommended limits would be 11/8 DFB, or 1-1/4 DFB
FAN PERFORMANCE DETERMINATION
The capacity tables on pages 7 through 27 show performances for one double width, double inlet (DWDI) fan at
standard air density (.075 lb./cu. ft.). When multiple fans are
used in parallel, the CFM and BHP shown in the tables must
be multiplied by the number of fans.
Approximate performance for single width, single inlet
fans (SWSI) is obtained by dividing the CFM and BHP shown
in the capacity tables by 2.
When air density is other than standard, correction must
be made to the performance shown in the capacity tables.
Where CFM and SP are specified at other than standard
density, the specified static pressures must be multiplied by
the density factor to obtain the equivalent SP. Equivalent SP
and specified CFM are then used to enter the capacity tables
to obtain RPM and equivalent BHP. BHP at the specified
density equals equivalent BHP divided by density factor.
Density factors are shown in the following table.
Combined density factor for temperatures and elevation is
obtained by multiplication of the separate factors.
DENSITY FACTORS
Temp
˚F.
Dens.
Factor
Temp
˚F.
Dens.
Factor
Temp
˚F.
Dens.
Factor
Temp
˚F.
Dens.
Factor
Elev.
Ft.
Dens.
Factor
Temp
˚F.
25%
Density factor at % Relative Humidity
50%
75%
100%
-75
-50
-25
0
0.726
0.774
0.821
0.868
125
150
175
200
1.104
1.151
1.198
1.245
325
350
375
400
1.481
1.528
1.576
1.623
525
550
575
600
1.859
1.906
1.953
2.000
0
1000
2000
3000
1.000
1.037
1.076
1.116
70
100
125
150
1.003
1.062
1.118
1.181
1.005
1.071
1.133
1.210
1.007
1.077
1.147
1.242
1.010
1.083
1.162
1.272
25
50
70
100
0.915
0.962
1.000
1.057
225
250
275
300
1.293
1.340
1.387
1.434
425
450
475
500
1.670
1.717
1.764
1.811
625
650
675
700
2.050
2.090
2.140
2.190
4000
5000
6000
7000
1.158
1.202
1.248
1.296
175
200
1.253
1.344
1.312
1.461
1.379
1.597
1.445
1.752
EXAMPLE: Compute the performance of a size 1-3/8 type DFB DWDI duplex fan at 10,000 CFM, 1” SP at 200˚ F, 5,000 ft. elevation:
1. Density factor for 200˚ F and 5,000 ft. altitude = 1.245 x 1.202 = 1.496 (round to 1.5)
2. Equiv. SP = SP at specified condition x Density Factor = 1.0” x 1.5 = 1.5”.
3. From Capacity Table, page 13, for 10,000 CFM and 1.5” Equiv. SP, we find that RPM = 711 and Equiv. BHP = 4.15.
BHP at specified condition = Equiv. BHP = 4.15 = 2.77
Dens Factor
1.5
For high temperature drying or for evaporative applications, Density Factor may be computed as follows:
1. Humidity Ratio (W) = Lbs. Water / Hr. Evaporated
CFM at Std. Conditions x 4.5
(1 + W)
2. Density at Condition (lbs/cu. ft.) =
(13.33 + 21.4 W)
X
1
1
X
Dens. Factors for Temp
Dens. Factor for Elev.
Where (W) is from (1) and Density Factors for Temperature and Elevation are from above table.
3. Density Factor =
4
.075 lbs. / cu. ft
Density at Conditions
Total CFM at Condition =
(CFM at std. conditions x 4.5) + (lbs. water / hr. evaporated)
Density at Conditon x 60
DF - DFB - DFC FAN SELECTION
CORRECTION TO FAN PERFORMANCE FOR
AXIAL CLEARANCE IN ENCLOSURE
Where fans are crowded within housed enclosures, so that the air flow space between fan housing
and enclosure is less
than one wheel diamFAN CAPACITY MULTIPLIERS
For Various Clearance Factors
eter, fan performance
is reduced from that
Clearance Factor
RPM
BHP
shown in the capacity
1.0
1.0
1.0
tables. Correction
.9
1.02
1.03
must be made by
.8
1.03
1.05
multiplying the
.7
1.05
1.07
Capacity Table values
.6
1.06
1.08
.5
1.07
1.09
by the factors shown
.4
1.08
1.11
in the following table.
Where Height (H) exceeds 2-1/2 wheel diameters,
the indicated increase in RPM and BHP due to clearance will be 1/2 that shown in table; i.e. 1.07
becomes 1.035, etc.
The above factors give average values; for precise
ratings it is recommended that the complete air handling cabinet be tested in accordance with the AMCA
Standards.
MAXIMUM SPEEDS & TEMPERATURE CONDITIONS
For Steel Wheels and Steel Shafts
Type DF — Max. Fan Wheel Tip Speed — ft./min.
Temp.
Range ˚F.
Size 1/2 – 1 3/4
Without Rings
Sizes 2 – 2 1/2
Without Rings
With Rings
Up to 300
8100
7000
8100
301 - 600
7500
6500
7500
601 - 750
6000
5500
6000
Max. Wheel RPM = Max. Tip Speed
Wheel Circum.
Max. Temperature for complete standard fans = 150˚ F.
Max. Temperature for standard wheels and housings = 500˚ F.
FAN MOTORS
Where motors larger than 30 HP are used across
the line, NEMA design B (part winding) motors are
recommended.
Each fan wheel in multiple wheel installations will
withstand starting and running torques of motors of
above characteristics when the fan speed and horsepower for each wheel are not in excess of the values
shown in the capacity tables for the particular design
wheel involved.
Extreme care must be used in multiple installations to provide ample shaft and supporting structure
to accommodate greater torque and side pull of the
drive caused by the larger motors. These forces are
particularly severe when motors are started across
the line.
BEARING COOLING WHEELS
A cooling wheel should ordinarily be used with
each external bearing on units operating over 300˚ F.,
to dissipate conducted and radiated heat away from
the bearings. DF Fan cooling wheels are split type,
cast aluminum for easy assembly and maintenance.
COOLING CONE
COOLING WHEEL
Bore
1” to 1-11/16
1-3/4” to 2-15/16”
3” to 3-15/16”
A
B
13/16” 6-1/2”
13/16” 8-1/4”
1 3/8”
12”
MISCELLANEOUS NOTES
Where direct fired heaters are used, provision for
adequate mixing of the high temperature output must
be made in order to avoid fan, shaft and bearing
damage.
High temperature limit controls in direct fired
installations should be located in the fan inlet air
stream. High temperature units should be run until
the internal temperature drops to 200˚ F. on shut-off
to prevent shaft sag or runout.
5
INSTALLATION ARRANGEMENTS
LIMITATIONS OF DF STANDARD COMPLETE FANS (TYPES DF, DFB, AND DFC)
DUPLEX FANS
SINGLE UNITARY FANS
Ball Bearing
6
Size
Max
RPM
Max
Motor HP
1/2
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
1 3/4
2
2 1/4
2 1/2
2900
2400
1750
1450
1450
1150
1100
1100
850
800
700
600
550
1.5
2
3
3
5
5
5
7.5
10
10
15
20
25
Ball Bearing
Size
Max
RPM
Max
Motor HP
1/2
5/8
3/4
7/8
1
1 1/8
1 1/4
1 3/8
1 1/2
1 3/4
2
2 1/4
2 1/2
2900
2400
2000
1550
1450
1200
1150
1100
900
800
700
600
500
1
1.5
2
3
5
5
5
5
5
7.5
10
15
20
PERFORMANCE TABLES - DF, DFB & DFC
The following performance tables are based on
separate tests run on single unitary and duplex
arrangements (except sizes 1/2 and 5/8). Tests are per
AMCA Bulletin 210 and duplex tests are based on fans
not closer than indicated on page 5 of this catalog.
All ratings are for free standing fans. When used in
enclosures, table values must be de-rated. De-rating
values should be obtained from tests per AMCA
Bulletin 211A, or can be estimated from chart on
page 5 of this catalog.
CUT-OFF ADJUSTMENT - TYPES DFB & DFC DUPLEX FANS
Some sizes of DFB & DFC Duplex fans exhibit
unstable tendencies when operated at low volume pressure ratios. This may result in unequal air deliveries where each fan is connected to a separate duct
system.
This condition may be corrected by moving the
heel of the cut-off in towards the wheel “A” inches.
SIZE 1/2 — DF TYPE DFB UNITARY FAN — SINGLE FAN*
OUTLET AREA = .36 SQ. FT.
Volume
of Air
CFM
Outlet
Velocity
FMP
288
324
360
396
432
468
504
540
576
648
720
792
864
936
1008
1080
1152
1224
800
900
1000
1100
1200
1300
1400
1500
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
WHEEL BLADE DIA. = 6 1/2”
1/4” SP
1/2” SP
3/4” SP
TIP SPEED = RPM x 1.70
1” SP
1 1/4” SP
1 1/2” SP
STD. BALANCE RPM: 3600
1 3/4” SP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
843
867
897
932
971
1013
1058
1104
1152
1248
1346
1446
1548
1652
1757
.02
.02
.03
.03
.04
.05
.06
.07
.08
.10
.13
.16
.20
.25
.31
1182
1172
1176
1188
1209
1235
1263
1296
1335
1418
1506
1599
1694
1791
1890
1996
.04
.05
.05
.06
.06
.07
.08
.09
.10
.13
.16
.20
.24
.30
.36
.42
1488
1470
1447
1438
1439
1446
1464
1487
1515
1578
1652
1731
1818
1910
2004
2106
.06
.01
.08
.08
.09
.10
.11
.12
.13
.16
.20
.24
.29
.34
.40
.46
1730
1725
1109
1685
1667
1656
1659
1671
1688
1733
1796
1865
1943
2027
2115
2208
.09
.10
.11
.11
.12
.13
.14
.16
.17
.20
.24
.28
.33
.39
.45
.52
1935
1926
1910
1889
1866
1854
1851
1859
1887
1935
1997
2064
2139
2220
2304
.12
.13
.14
.16
.17
.18
.19
.21
.24
.27
.32
.38
.44
.50
.58
2115
2106
2093
2072
2048
2033
2030
2040
2075
2124
2184
2250
2324
2400
.16
.18
.19
.20
.22
.23
.24
.28
.32
.36
.42
.48
.55
.64
2288
2288
2277
2261
2237
2213
2196
2193
2214
2250
2301
2361
2427
2496
.20
.21
.22
.24
.25
.27
.28
.32
.36
.41
.46
.53
.61
.68
2” SP
2 1/2” SP
RPM
BHP
RPM
BHP
2448
2445
2439
2421
2393
2363
2343
2354
2378
2417
2471
2529
2592
2662
.24
.26
.28
.29
.31
.33
.37
.41
.46
.51
.58
.66
.72
.80
2730
2732
2729
2717
2694
2642
2627
2630
2648
2682
2730
2184
2848
.34
.36
.38
.40
.42
.46
.51
.56
.62
.69
.77
.85
.94
3” SP
RPM
BHP
2980
2990
2985
2975
2940
2893
2875
2789
2892
2928
2974
3030
3093
.44
.46
.49
.51
.56
.62
.68
.74
.80
.88
.06
1.04
1.16
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
SIZE 5/8 — DF TYPE DFB UNITARY FAN — SINGLE FAN*
OUTLET AREA = .53 SQ. FT.
Volume
of Air
CFM
Outlet
Velocity
FMP
424
477
530
583
636
689
742
795
848
954
1060
1166
1272
1378
1484
1590
1696
1802
800
900
1000
1100
1200
1300
1400
1500
1600
1800
2060
2200
2400
2600
2800
3000
3200
3400
WHEEL BLADE DIA. = 8 1/8”
1/4” SP
1/2” SP
3/4” SP
TIP SPEED = RPM x 2.13
1” SP
1 1/4” SP
STD. BALANCE RPM: 2850
1 1/2” SP
1 3/4” SP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
672
692
716
744
775
808
844
881
919
995
1073
1154
1236
1318
1401
.03
.04
.04
.05
.06
.07
.08
.10
.11
.15
.19
.24
.30
.37
.45
943
935
938
948
965
986
1009
1034
1066
1132
1202
1276
1353
1430
1508
1588
.06
.07
.07
.08
.09
.11
.12
.14
.15
.19
.24
.29
.36
.43
.52
.62
1187
1173
1151
1148
1148
1194
1169
1186
1209
1260
1318
1382
1450
1524
1599
1683
.09
.10
.11
.12
.13
.15
.16
.18
.20
.24
.29
.35
.42
.50
.59
.69
1378
1377
1364
1343
1330
1322
1324
1334
1346
1383
1433
1489
1550
1617
1687
1762
.13
.14
.15
.17
.18
.19
.21
.23
.25
.29
.35
.41
.48
.57
.66
.77
1545
1537
1526
1508
1489
1479
1478
1482
1506
1542
1593
1647
1707
1772
1838
.18
.29
.21
.23
.24
.26
.28
.30
.35
.40
.47
.55
.64
.73
.85
1687
1881
1670
1654
1635
1623
1620
1628
1652
1694
1743
1796
1854
1918
.24
.26
.27
.29
.31
.33
.36
.41
.46
.53
.61
.71
.81
.93
1825
1825
1817
1804
1787
1766
1753
1750
1764
1795
1836
1884
1936
1988
.29
.31
.33
.35
.37
.39
.42
.47
.53
.60
.68
.78
.89
1.01
MAX. RPM WITH REINFORCEMENT: 3600
2” SP
2 1/2” SP
RPM
BHP
RPM
BHP
1953
1951
1947
1932
1910
1887
1870
1878
1897
1929
1972
2019
2072
2132
.36
.38
.41
.43
.45
.48
.54
.60
.67
.75
.85
.96
1.08
1.25
2179
2180
2177
2168
2150
2105
2006
2099
2112
2140
2179
2220
2274
.50
.52
.55
.58
.61
.68
.75
.82
.90
1.00
1.12
1.26
1.42
3” SP
RPM
BHP
2380
2385
2382
2375
2347
2303
2295
2296
2309
2338
2372
2418
2476
.65
.68
.71
.75
.82
.90
.98
1.07
1.17
1.28
1.42
1.57
1.74
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
* ON SIZES 1/2 AND 5/8, ESTIMATE DUPLEX PERFORMANCE BY MULTIPLYING CFM AND BHP BY 2.
7
8
795
909
1020
1140
1250
1360
1480
1590
1700
1930
2160
2390
2610
2840
3070
3300
3520
3750
3980
4200
700
800
900
1000
1100
1200
1300
1400
1500
1700
1900
2100
2300
2500
2700
2900
3100
3300
3500
3700
1059
911
947
984
810
842
876
758
764
784
0.45
0.25
0.29
0.34
0.15
0.18
0.21
0.09
0.11
0.13
BHP
1/2” SP
RPM
1155
1229
1304
1016
1049
1083
939
959
985
948
931
929
0.52
0.67
0.84
0.31
0.35
0.41
0.20
0.23
0.27
0.15
0.16
0.18
BHP
3/4” SP
RPM
1458
1239
1311
1384
1115
1142
1172
1072
1077
1092
1096
1078
RPM
1.14
0.60
0.75
0.93
0.37
0.42
0.48
0.27
0.30
0.33
0.23
0.24
BHP
1” SP
1529
1604
1679
1318
1385
1456
1214
1234
1258
1206
1198
1201
1224
RPM
1140
1250
1360
1480
1590
1700
1930
2160
2390
2610
2840
3070
3300
3520
3750
3980
4200
2000
2200
2400
2600
2800
3000
3400
3800
4200
4600
5000
5400
5800
6200
6600
7000
7400
1047
896
933
970
806
831
862
805
795
793
0.94
0.52
0.61
0.71
0.32
0.37
0.44
0.22
0.24
0.27
1/2” SP
RPM
BHP
1137
1212
1289
1005
1033
1066
972
971
983
996
991
982
1.09
1.40
1.77
0.64
0.74
0.84
0.45
0.50
0.56
0.33
0.37
0.41
1440
1220
1290
1364
1124
1138
1160
1138
1127
1120
1150
1146
2.40
1.25
1.57
1.96
0.79
0.88
0.99
0.62
0.67
0.72
0.51
0.56
Outlet 1” SP
3/4” SP
RPM
BHP
RPM
BHP
1507
1583
1660
1303
1364
1433
1254
1253
1262
1281
1274
1263
1286
2.61
3.15
3.76
1.41
1.74
2.14
0.98
1.06
1.16
0.78
0.85
0.91
0.72
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 9 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
795
909
1020
Velocity
FMP
1400
1600
1800
Volume
of Air
CFM
OUTLET AREA = 1.76 SQ. FT.
1817
1595
1668
1742
1394
1456
1524
1315
1326
1344
1338
1321
1313
2.25
1.35
1.61
1.91
0.76
0.93
1.12
0.52
0.57
0.63
0.42
0.45
0.48
BHP
1 1/2” SP
RPM
1931
2005
2080
1717
1786
1858
1546
1593
1651
1521
1516
1518
1536
RPM
2.51
2.91
3.35
1.56
1.84
2.16
0.94
1.11
1.32
0.70
0.75
0.80
0.66
BHP
2” SP
2255
2330
2035
2107
2180
1831
1896
1964
1699
1728
1774
1708
1697
RPM
4.15
4.71
2.77
3.19
3.64
1.78
2.07
2.40
1.14
1.31
1.53
0.95
1.01
BHP
2 1/2” SP
TIP SPEED = RPM x 2.55
2346
2420
2131
2201
2273
1943
2000
2064
1857
1865
1896
1876
4.47
5.04
3.04
3.47
3.94
2.01
2.31
2.65
1.37
1.53
1.75
1.23
BHP
3” SP
RPM
2432
2505
2224
2291
2361
2055
2103
2160
2015
2005
2020
RPM
4.78
5.38
3.30
3.75
4.24
2.25
2.55
2.90
1.61
1.78
1.99
BHP
3 1/2” SP
2514
2585
2314
2377
2444
2168
2206
2256
2146
2146
RPM
1796
1570
1643
1719
1391
1438
1500
1385
1376
1372
1408
1403
1396
4.72
2.81
3.37
4.01
1.60
1.93
2.33
1.19
1.27
1.36
0.95
1.04
1.11
1 1/2” SP
RPM
BHP
1903
1978
2055
1692
1758
1829
1584
1596
1635
1619
1610
1600
1624
5.24
6.09
7.03
3.24
3.82
4.49
2.05
2.35
2.75
1.63
1.73
1.83
1.52
2” SP
RPM
BHP
2225
2301
2002
2074
2149
1817
1870
1933
1786
1772
1781
1813
1806
8.70
9.89
5.76
6.64
7.62
3.71
4.29
4.98
2.59
2.87
3.23
2.20
2.33
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 2.55
2311
2386
2098
2166
2237
1951
1986
2037
1974
1953
1940
1988
9.33
10.56
6.29
7.20
8.21
4.25
4.81
5.49
3.16
3.46
3.81
2.84
3” SP
RPM
BHP
2393
2466
2196
2256
2323
2096
2110
2145
2143
2125
2105
9.95
11.21
6.85
7.77
8.80
4.87
5.40
6.06
3.73
4.09
4.45
3 1/2” SP
RPM
BHP
2473
2543
2296
2347
2407
2246
2241
2259
2284
2265
10.58
11.87
7.46
8.37
9.42
5.56
6.06
6.69
4.73
5.14
4” SP
RPM
BHP
STD. BALANCE RPM: 2400
5.10
5.71
3.58
4.04
4.54
2.51
2.81
3.17
2.04
2.25
BHP
4” SP
STD. BALANCE RPM: 2400
SIZE 3/4 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
1.25
1.50
1.79
0.68
0.84
1.03
0.44
0.49
0.55
0.34
0.37
0.40
0.32
BHP
1 1/4” SP
WHEEL BLADE DIA. = 9 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = .88 SQ. FT.
SIZE 3/4 — DF TYPE DFB UNITARY FAN — SINGLE FAN
5.74
6.38
4.16
4.63
5.16
3.07
3.38
3.74
2.83
2634
2695
2512
2539
2581
2537
2517
2505
2556
11.91
13.23
8.85
9.72
10.74
7.06
7.58
8.15
6.54
5” SP
RPM
BHP
2669
2736
2491
2545
2605
2397
2413
2446
2402
BHP
5” SP
RPM
6.41
7.07
4.78
5.26
5.81
3.71
4.01
4.37
BHP
2965
3020
2849
2877
2916
2840
2836
7.10
7.78
5.46
5.94
6.49
4.70
5.05
BHP
7” SP
RPM
3112
3159
3032
3046
3073
3035
7.84
8.53
6.20
6.68
7.22
5.80
BHP
8” SP
RPM
2801
2848
2746
2747
2766
2800
2782
2761
13.39
14.69
10.50
11.29
12.25
8.60
9.22
9.84
6” SP
RPM
BHP
2979
3009
2983
2967
2965
3023
3005
15.05
16.31
12.34
13.10
13.99
10.90
11.62
7” SP
RPM
BHP
3169
3173
16.94
15.94
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 3450
2818
2880
2669
2710
2761
2631
2625
2639
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 3450
9
746
895
1040
1190
1340
1490
1640
1790
1940
2090
2240
2390
2540
2690
2840
2990
3280
3580
3880
4180
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
4400
4800
5200
5600
867
914
962
732
776
821
640
658
691
0.53
0.65
0.79
0.27
0.34
0.43
0.13
0.16
0.21
BHP
1/2” SP
RPM
1087
1134
1182
949
994
1040
826
863
905
783
797
1.07
1.25
1.46
0.63
0.76
0.90
0.35
0.42
0.52
0.24
0.28
BHP
3/4” SP
RPM
1294
1342
1155
1200
1247
1022
1065
1109
918
946
981
912
905
RPM
1.85
2.11
1.19
1.39
1.60
0.73
0.86
1.02
0.43
0.51
0.61
0.32
0.37
BHP
1” SP
1494
1353
1399
1446
1216
1261
1307
1090
1130
1172
1013
1028
1055
1015
RPM
746
895
1040
1190
1340
1490
1640
1790
1940
2090
2240
2390
2540
2690
2840
2990
3280
3580
3880
4180
2000
2400
2800
3200
3600
4000
4400
4800
5200
5600
6000
6400
6800
7200
7600
8000
8800
9600
10400
11200
855
903
952
720
763
808
676
668
685
1.10
1.35
1.63
0.55
0.70
0.89
0.30
0.35
0.43
1/2” SP
RPM
BHP
1073
1121
1170
933
978
1025
826
852
890
829
818
2.21
2.60
3.03
1.29
1.55
1.86
0.72
0.87
1.06
0.53
0.61
3/4” SP
RPM
BHP
1279
1327
1136
1183
1231
1006
1047
1091
945
949
972
957
3.82
4.38
2.45
2.86
3.32
1.48
1.76
2.08
0.93
1.07
1.25
0.83
1” SP
RPM
BHP
1478
1334
1381
1430
1195
1240
1287
1081
1114
1153
1067
1057
1061
1079
6.03
4.12
4.70
5.34
2.69
3.12
3.59
1.70
1.98
2.31
1.18
1.31
1.48
1.05
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 11 3/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.68 SQ. FT.
1546
1641
1407
1453
1499
1274
1317
1362
1157
1193
1232
1109
1111
1129
3.09
3.86
2.15
2.43
2.75
1.44
1.65
1.89
0.94
1.08
1.25
0.63
0.71
0.81
BHP
1 1/2” SP
RPM
1924
1642
1734
1828
1507
1551
1596
1382
1422
1464
1292
1315
1346
1282
1280
RPM
6.29
3.44
4.25
5.20
2.45
2.75
3.08
1.70
1.92
2.17
1.17
1.32
1.49
0.95
1.05
BHP
2” SP
2004
2099
1729
1819
1911
1599
1641
1685
1488
1522
1559
1430
1440
1460
1434
RPM
6.75
8.04
3.79
4o64
5.62
2.75
3.07
3.42
1.97
2.20
2.46
1.44
1.59
1.76
1.32
BHP
2 1/2” SP
TIP SPEED = RPM x 2.98
2080
2173
1810
1898
1988
1688
1727
1768
1594
1620
1652
1567
1575
7.21
8.53
4.15
5.03
6.05
3.07
3.40
3.76
2.26
2.50
2.77
1.88
2.06
BHP
3” SP
RPM
2151
2243
1887
1972
2061
1774
1809
1847
1701
1719
1744
1692
RPM
7.67
9.03
4.51
5.42
6.47
3.40
3.73
4.11
2.58
2.82
3.09
2.38
BHP
3 1/2” SP
2218
2309
1963
2044
2129
1861
1891
1925
1810
1819
1836
RPM
1527
1623
1385
1432
1479
1253
1295
1339
1162
1183
1215
1179
1166
1157
6.39
8.01
4.41
5.01
5.67
2.93
3.37
3.87
1.95
2.22
2.55
1.44
1.58
1.74
1 1/2” SP
RPM
BHP
1904
1616
1711
1807
1481
1525
1570
1370
1402
1440
1340
1336
1347
1363
1352
13.04
7.08
8.79
10.77
5.00
5.63
6.32
3.48
3.92
4.43
2.56
2.80
3.10
2.16
2.36
2” SP
RPM
BHP
1980
2076
1700
1791
1884
1576
1614
1656
1498
1515
1542
1514
1501
1494
13.97
16.65
7.77
9.55
11.61
5.62
6.26
6.98
4.12
4.54
5.04
3.26
3.50
3.78
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 2.98
2050
2146
1780
1866
1957
1674
1705
1740
1637
1638
1651
1659
1646
14.88
17.65
8.47
10.30
12.43
6.30
6.94
7.67
4.88
5.27
5.74
4.27
4.56
3” SP
RPM
BHP
2117
2211
1861
1939
2026
1779
1799
1827
1778
1769
1768
1791
15.77
18.62
9.20
11.07
13.25
7.07
7.69
8.40
5.73
6.11
6.54
5.39
3 1/2” SP
RPM
BHP
2181
2273
1944
2012
2093
1890
1899
1917
1914
1901
1891
16.66
19.58
10.00
11.86
14.09
7.93
8.52
9.21
6.62
7.02
7.44
4” SP
RPM
BHP
STD. BALANCE RPM: 2025
8.13
9.52
4.88
5.82
6.90
3.74
4.09
4.47
2.93
3.17
3.44
BHP
4” SP
STD. BALANCE RPM: 2025
SIZE 7/8 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
2.91
2.00
2.27
2.58
1.31
1.52
1.74
0.83
0.97
1.13
0.52
0.61
0.71
0.46
BHP
1 1/4” SP
WHEEL BLADE DIA. = 11 3/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 1.34 SQ. FT.
SIZE 7/8— DF TYPE DFB UNITARY FAN — SINGLE FAN
9.05
10.51
5.66
6.63
7.76
4.50
4.84
5.23
3.93
4.19
2305
2391
2121
2163
2227
2122
2114
2113
2148
2135
18.47
21.50
11.81
13.60
15.83
9.93
10.47
11.08
8.94
9.43
5” SP
RPM
BHP
2345
2432
2111
2181
2260
2037
2056
2081
2023
2025
BHP
5” SP
RPM
9.99
11.51
6.49
7.48
8.65
5.34
5.68
6.06
BHP
2579
2658
2408
2449
2508
2397
10.96
12.52
7.40
8.39
9.58
6.97
BHP
7” SP
RPM
2693
2560
2585
2631
11.96
8.38
9.37
10.56
BHP
8” SP
RPM
2430
2506
2314
2325
2367
2346
2332
2321
20.39
23.48
13.95
15.61
17.76
12.08
12.67
13.28
6” SP
RPM
BHP
2558
2621
2512
2499
2515
2525
22.49
25.56
16.36
17.92
19.94
15.66
7” SP
RPM
BHP
2694
2704
2679
2672
24.81
18.89
20.50
22.40
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 3450
2464
2548
2258
2315
2385
2216
2223
2237
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 3450
10
784
915
1050
1180
1310
1440
1570
1700
1830
1960
2090
2220
2350
2610
2880
3140
3400
3660
3920
4180
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
4000
4400
4800
5200
5600
6000
6400
793
699
730
761
612
639
668
571
574
589
0.75
0.46
0.55
0.64
0.26
0.32
0.38
0.15
0.18
0.22
BHP
1/2” SP
RPM
959
865
896
927
776
805
835
708
726
749
717
701
699
1.32
0.88
1.01
1.16
0.56
0.66
0.76
0.35
0.41
0.48
0.25
0.27
0.31
BHP
3/4” SP
RPM
1020
1083
929
959
989
848
873
900
806
812
827
827
811
RPM
1.47
1.86
1.01
1.15
1.30
0.68
0.77
0.89
0.46
0.52
0.59
0.38
0.42
BHP
1” SP
1075
1137
1199
988
1016
1045
920
939
962
906
901
906
921
RPM
784
915
1050
1180
1310
1440
1570
1700
1830
1960
2090
2220
2350
2610
2880
3140
3400
3660
3920
4180
2400
2800
3200
3600
4000
4400
4800
5200
5600
6000
6400
6800
7200
8000
8800
9600
10400
11200
12000
12800
761
668
699
730
591
612
639
590
582
579
1.55
0.94
1.12
1.32
0.54
0.65
0.78
0.35
0.40
0.46
1/2” SP
RPM
BHP
921
827
858
889
744
770
798
710
711
724
728
725
717
2.72
1.81
2.08
2.38
1.15
1.34
1.56
0.77
0.86
0.99
0.54
0.62
0.69
3/4” SP
RPM
BHP
976
1038
888
916
946
825
841
863
830
822
818
841
837
3.02
3.83
2.06
2.35
2.67
1.40
1.59
1.81
1.04
1.14
1.25
0.84
0.95
1” SP
RPM
BHP
1028
1087
1149
950
973
999
915
918
931
936
929
920
939
3.33
4.17
5.16
2.34
2.63
2.96
1.71
1.88
2.09
1.33
1.45
1.57
1.20
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 13”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.06 SQ. FT.
1310
1374
1127
1186
1248
1046
1071
1098
993
1005
1024
1004
991
987
3.26
3.91
1.79
2.20
2.69
1.28
1.44
1.60
0.93
1.03
1.15
0.72
0.78
0.85
BHP
1 1/2” SP
RPM
1586
1398
1459
1522
1225
1279
1337
1161
1179
1200
1141
1141
1147
1150
RPM
6.01
3.68
4.36
5.14
2.11
2.56
3.08
1.59
1.74
1.92
1.24
1.33
1.45
1.15
BHP
2” SP
1661
1724
1477
1537
1598
1320
1366
1419
1277
1287
1301
1290
1279
1274
RPM
6.53
7.54
4.09
4.81
5.62
2.46
2.92
3.46
1.93
2.08
2.26
1.59
1.68
1.80
BHP
2 1/2” SP
TIP SPEED = RPM x 3.41
1730
1792
1552
1610
1669
1416
1452
1499
1397
1397
1404
1416
1403
7.05
8.10
4.52
5.27
6.11
2.84
3.30
3.87
2.31
2.46
2.64
2.07
2.18
BHP
3” SP
RPM
1796
1856
1625
1679
1736
1513
1538
1577
1517
1509
1508
1530
RPM
7.57
8.65
4.96
5.73
6.60
3.25
3.72
4.29
2.73
2.88
3.05
2.60
BHP
3 1/2” SP
1858
1917
1697
1746
1800
1612
1625
1655
1635
1622
1614
RPM
1256
1319
1078
1134
1194
1015
1031
1053
1008
1003
1004
1028
1024
1017
6.72
8.08
3.64
4.50
5.53
2.65
2.94
3.27
2.06
2.22
2.41
1.62
1.77
1.92
1 1/2” SP
RPM
BHP
1523
1336
1397
1459
1182
1225
1278
1158
1159
1167
1180
1172
1163
1185
12.42
7.52
8.96
10.59
4.33
5.21
6.27
3.41
3.67
3.97
2.81
3.01
3.20
2.61
2” SP
RPM
BHP
1591
1654
1412
1469
1529
1296
1320
1361
1306
1298
1294
1326
1322
1315
13.44
15.56
8.14
9,83
11.53
5.16
5.99
7.06
4.32
4.56
4.84
3.58
3.83
4.07
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 3.41
1655
1716
1488
1539
1595
1419
1422
1447
1443
1434
1426
1453
1449
14.44
16.64
9.21
10.73
12.47
6.15
6.91
7.93
5.26
5.55
5.84
4.66
4.96
3” SP
RPM
BHP
1716
1775
1567
1609
1660
1543
1531
1539
1566
1560
1552
1570
15.45
17.71
10.16
11.67
13.44
7.23
7.97
8.92
6.21
6.56
6.90
5.85
3 1/2” SP
RPM
BHP
1777
1832
1650
1682
1725
1661
1644
1637
1674
1668
16.49
18.79
11.21
12.68
14.45
6.36
9.14
10.04
7.57
7.97
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
8.10
9.21
5.41
6.20
7.09
3.69
4.16
4.73
3.18
3.33
3.50
BHP
4” SP
STD. BALANCE RPM: 1800
SIZE 1 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
1.63
2.03
2.50
1.15
1.29
1.45
0.80
0.90
1.01
0.59
0.64
0.71
0.54
BHP
1 1/4” SP
WHEEL BLADE DIA. = 13”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 1.53 SQ. FT.
SIZE 1 — DF TYPE DFB UNITARY FAN — SINGLE FAN
9.16
10.33
6.38
7.19
8.12
4.68
5.13
5.69
1899
1946
1830
1837
1861
1871
1857
1840
18.71
21.04
13.66
15.01
16.69
10.64
11.62
12.59
5” SP
RPM
BHP
1977
2033
1840
1878
1925
1812
1802
1813
BHP
5” SP
RPM
10.28
11.49
7.45
8.26
9.20
6.22
6.77
BHP
2206
2250
2133
2145
2170
2138
11.45
12.69
8.62
9.42
10.36
7.96
BHP
7” SP
RPM
2321
2357
2283
2281
2295
12.70
13.95
9.89
10.68
11.61
BHP
8” SP
RPM
2029
2063
2017
2005
2009
2048
2034
21.21
23.50
16.49
17.76
19.30
14.15
15.33
6” SP
RPM
BHP
2168
2186
2195
2178
2166
2210
24.08
26.24
19.48
20.83
22.31
18.11
7” SP
RPM
BHP
2316
2318
2360
2344
2327
27.32
29.34
22.51
24.06
25.62
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 2375
2092
2142
1985
2011
2047
1982
1974
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 2375
11
810
990
1170
1350
1530
1710
1890
2070
2250
2430
2610
2790
2970
3150
3330
3510
3690
3870
4050
4230
1800
2200
2600
3000
3400
3800
4200
4600
5000
5400
5800
6200
6600
7000
7400
7800
8200
8600
9000
9400
718
591
632
675
489
514
550
1.19
0.56
0.73
0.94
0.23
0.31
0.42
1/2” SP
RPM
BHP
778
821
864
657
695
736
596
599
623
1.37
1.69
2.05
0.69
0.88
1.11
0.35
0.42
0.54
3/4” SP
RPM
BHP
957
1001
831
872
914
719
752
791
686
694
2.70
3.19
1.55
1.88
2.26
0.83
1.03
1.27
0.56
0.67
1” SP
RPM
BHP
1131
1002
1045
1088
879
919
960
780
807
841
767
810
990
1170
1350
1530
1710
1890
2070
2250
2430
2610
2790
2970
3150
3330
3510
3690
3870
4050
4230
3600
4400
5200
6000
6800
7600
8400
9200
10000
10800
11600
12400
13200
14000
14800
15600
16400
17200
18000
18800
712
581
624
667
509
513
542
2.45
1.14
1.50
1.93
0.50
0.64
0.85
1/2” SP
RPM
BHP
768
811
856
649
684
725
634
623
625
2.80
3.45
4.20
1.40
1.78
2.24
0.78
0.92
1.11
3/4” SP
RPM
BHP
947
991
818
860
903
721
744
778
729
718
5.52
6.54
3.15
3.83
4.62
1.71
2.08
2.56
1.26
1.45
1” SP
RPM
BHP
1121
989
1032
1076
866
904
946
802
808
832
811
9.54
5.97
7.03
8.22
3.50
4.21
5.03
2.09
2.43
2.91
1.84
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 14 5/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA =4.44 SQ. FT.
1171
1214
1258
1044
1086
1128
925
963
1003
843
861
890
841
4.93
5.66
6.47
3.16
3.69
4.28
1.92
2.28
2.69
1.15
1.35
1.61
1.00
1 1/2” SP
RPM
BHP
1371
1415
1459
1243
1286
1328
1121
1161
1202
1013
1046
1082
972
972
987
8.02
9.02
10.11
5.50
6.26
7.10
3.63
4.19
4.81
2.31
2.69
3.13
1.53
1.73
1.99
2” SP
RPM
BHP
1563
1607
1435
1477
1520
1309
1351
1392
1192
1230
1269
1101
1126
1157
1085
1087
12.06
13.38
8.68
9.72
10.84
6.07
6.86
7.73
4.10
4.69
5.34
2.74
3.13
3.58
2.17
2.42
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 3.83
1620
1663
1493
1535
1577
1371
1411
1452
1261
1295
1332
1191
1207
1231
1188
12.83
14.18
9.35
10.42
11.58
6.64
7.46
8.37
4.60
5.20
5.88
3.21
3.60
4.06
2.90
3” SP
RPM
BHP
1673
1716
1548
1590
1631
1430
1468
1508
1329
1359
1393
1283
1288
1305
13.61
14.99
10.02
11.13
12.32
7.21
8.07
9.01
5.12
5.74
6.44
3.73
4.12
4.58
3 1/2” SP
RPM
BHP
1724
1766
1601
1641
1682
1487
1523
1561
1398
1423
1453
1372
1380
1158
1202
1247
1028
1071
1114
914
948
987
884
878
889
895
10.10
11.61
13.26
6.42
7.51
8.74
3.88
4.60
5.45
2.53
2.85
3.29
2.25
1 1/2” SP
RPM
BHP
1357
1401
1446
1226
1269
1313
1103
1142
1183
1019
1038
1068
1034
1023
1014
16.42
18.49
20.74
11.19
12.78
14.52
7.32
8.47
9.76
4.77
5.46
6.31
3.45
3.84
4.24
2” SP
RPM
BHP
1548
1593
1416
1460
1504
1289
1330
1373
1179
1212
1249
1134
1136
1152
1155
1144
24.73
27.44
17.73
19.88
22.21
12.28
13.93
15.74
8.29
9.46
10.79
5.86
6.49
7.30
4.88
5.36
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 3.83
1601
1645
1471
1514
1557
1350
1388
1429
1258
1283
1314
1252
1242
1244
1263
26.25
29.04
19.01
21.23
23.65
13.39
15.08
16.96
9.39
10.53
11.87
7.10
7.70
8.44
6.53
3” SP
RPM
BHP
1650
1694
1524
1565
1607
1411
1446
1484
1343
1357
1381
1362
1350
1342
27.74
30.62
20.29
22.58
25.06
14.56
16.28
18.19
10.64
11.73
13.04
8.39
9.05
9.76
3 1/2” SP
RPM
BHP
1698
1741
1576
1615
1656
1474
1504
1538
1434
1437
1451
1453
1441
29.21
32.16
21.59
23.93
26.47
15.82
17.53
19.46
12.05
13.07
14.33
10.46
11.22
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
14.38
15.80
10.70
11.83
13.06
7.81
8.68
9.65
5.67
6.30
7.01
4.67
5.13
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
SIZE 1 1/8 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
4.65
2.93
3.44
4.01
1.74
2.08
2.48
0.98
1.19
1.44
0.83
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 14 5/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.22 SQ. FT.
SIZE 1 1/8 — DF TYPE DFB UNITARY FAN — SINGLE FAN
15.93
17.41
12.06
13.25
14.54
9.05
9.96
10.96
6.88
7.51
8.23
6.35
1789
1829
1679
1713
1750
1609
1626
1650
1617
1606
1603
1628
32.18
35.25
24.35
26.73
29.34
18.69
20.32
22.21
15.22
16.20
17.33
14.27
5” SP
RPM
BHP
1818
1859
1701
1739
1778
1599
1630
1664
1537
1551
1572
1533
5” SP
RPM
BHP
17.49
19.03
13.48
14.71
16.05
10.39
11.31
12.34
8.85
9.57
1991
2028
1891
1922
1955
1825
1842
1864
1816
19.08
20.67
14.96
16.22
17.60
11.84
12.77
13.81
11.03
7” SP
RPM
BHP
2074
2109
1986
2012
2042
1941
1949
1965
20.72
22.35
16.53
17.80
19.20
13.42
14.33
15.37
8” SP
RPM
BHP
1878
1915
1788
1814
1844
1756
1758
1769
1774
1763
35.27
38.40
27.42
29.77
32.39
22.10
23.59
25.36
19.68
20.83
6” SP
RPM
BHP
1969
2001
1904
1919
1942
1907
1898
1897
1919
38.57
41.71
30.91
33.16
35.71
25.91
27.35
28.99
24.58
7” SP
RPM
BHP
2064
2089
2027
2032
2044
2052
2040
2031
42.17
45.27
34.86
36.96
39.40
29.93
31.45
33.05
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 2115
1906
1945
1797
1831
1868
1711
1736
1764
1682
1693
6” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 2115
12
819
983
1150
1310
1480
1640
1800
1970
2130
2300
2460
2620
2790
2950
3110
3280
3440
3610
3770
3930
4100
2000
2400
2800
3200
3600
4000
4400
4800
5200
5600
6000
6400
6800
7200
7600
8000
8400
8800
9200
9600
10000
579
490
519
548
432
442
463
1.00
0.51
0.65
0.81
0.25
0.31
0.40
BHP
1/2” SP
RPM
725
634
664
694
554
578
606
538
529
536
2.00
1.18
1.42
1.69
0.66
0.80
0.98
0.39
0.45
0.54
BHP
3/4” SP
RPM
771
802
832
684
712
741
618
635
658
618
611
RPM
2.23
2.60
3.00
1.37
1.62
1.91
0.82
0.97
1.15
0.62
0.70
BHP
1” SP
903
934
813
843
873
731
757
784
683
692
709
687
RPM
819
983
1150
1310
1480
1640
1800
1970
2130
2300
2460
2620
2790
2950
3110
3280
3440
3610
3770
3930
4100
4000
4800
5600
6400
7200
8000
8800
9600
10400
11200
12000
12800
13600
14400
15200
16000
16800
17600
18400
19200
20000
571
483
510
540
458
452
461
2.03
1.03
1.31
1.64
0.56
0.66
0.82
1/2” SP
RPM
BHP
716
624
654
685
556
572
596
567
562
554
4.08
2.39
2.88
3.45
1.35
1.62
1.97
0.87
1.02
1.16
3/4” SP
RPM
BHP
760
791
822
675
701
730
640
640
653
654
648
4.54
5.30
6.14
2.77
3.28
3.87
1.77
2.01
2.34
1.39
1.58
1” SP
RPM
BHP
891
923
800
830
860
727
747
772
723
715
716
730
7.63
8.70
5.00
5.78
6.66
3.19
3.70
4.30
2.25
2.49
2.79
2.01
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 16 1/4
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 4.88 SQ. FT.
1032
940
970
1001
852
881
910
777
799
825
750
750
760
762
5.78
4.03
4.56
5.14
2.71
3.11
3.55
1.78
2.05
2.36
1.21
1.36
1.55
1.10
BHP
1 1/2” SP
RPM
1188
1097
1127
1158
1008
1037
1067
927
952
980
870
884
904
881
868
864
RPM
8.81
6.46
7.18
7.97
4.61
5.17
5.79
3.21
3.63
4.09
2.24
2.51
2.84
1.68
1.83
2.01
BHP
2” SP
1246
1276
1307
1156
1185
1215
1071
1098
1127
999
1021
1045
966
970
982
970
RPM
9.60
10.54
11.55
7.14
7.90
8.72
5.20
5.79
6.44
3.74
4.17
4.66
2.77
3.04
3.36
2.55
BHP
2 1/2” SP
TIP SPEED = RPM x 4.25
1298
1328
1358
1211
1240
1269
1131
1157
1183
1072
1088
1108
1063
1058
1062
10.38
11.36
12.40
7.82
8.61
9.46
5.81
6.42
7.09
4.32
4.76
5.25
3.36
3.62
3.94
BHP
3” SP
RPM
1348
1377
1407
1264
1291
1319
1191
1213
1238
1146
1157
1172
1159
1147
1143
RPM
11.16
12.17
13.25
8.52
9.34
10.22
6.45
7.08
7.77
4.95
5.38
5.88
4.00
4.26
4.58
BHP
3 1/2” SP
1396
1424
1453
1315
1341
1368
1251
1270
1292
1222
1226
1236
1235
1225
RPM
1020
926
957
988
840
867
896
784
796
815
798
790
783
803
11.82
8.19
9.29
10.50
5.47
6.28
7.18
3.69
4.17
4.77
2.74
3.02
3.31
2.44
1 1/2” SP
RPM
BHP
1174
1081
1111
1143
992
1020
1050
921
941
965
907
903
908
923
916
18.03
13.13
14.64
16.27
9.30
10.46
11.74
6.52
7.33
8.26
4.88
5.31
5.85
4.12
4.50
2” SP
RPM
BHP
1228
1259
1290
1137
1167
1197
1057
1082
1109
1011
1020
1036
1025
1017
1010
1032
19.54
21.50
23.61
14.44
16.01
17o7l
10.50
11.68
12.99
7.79
8.54
9.45
6.21
6.68
7.18
5.73
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 4.25
1278
1308
1339
1193
1220
1248
1126
1145
1167
1108
1106
1113
1130
1124
1115
21.03
23.07
25.24
15.78
17.39
19.14
11.82
12.99
14.31
9.29
9.98
10.82
7.56
8.13
8.69
3” SP
RPM
BHP
1326
1355
1385
1249
1273
1299
1199
1211
1228
1205
1197
1195
1220
1213
22.54
24.63
26.87
17.21
18.83
20.61
13.33
14.45
15.74
10.93
11.61
12.39
9.61
10.28
3 1/2” SP
RPM
BHP
1375
1402
1430
1307
1326
1349
1277
1281
1291
1296
1288
1280
1309
1304
24.10
26.22
28.50
18.75
20.36
22.15
15.04
16.09
17.33
12.63
13.38
14.16
11.09
11.87
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
11.95
12.99
14.10
9.24
10.07
10.98
7.13
7.76
8.47
5.63
6.06
6.56
4.96
5.27
BHP
4” SP
STD. BALANCE RPM: 1800
SIZE 1 1/4 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
3.74
4.26
2.47
2.85
3.27
1.57
1.83
2.13
1.01
1.16
1.34
0.89
BHP
1 1/4” SP
WHEEL BLADE DIA. = 16 1/4
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.44 SQ. FT.
SIZE 1 1/4 — DF TYPE DFB UNITARY FAN — SINGLE FAN
13.57
14.66
15.82
10.74
11.61
12.55
8.61
9.24
9.95
7.15
7.56
8.05
1473
1495
1519
1431
1440
1454
1438
1431
1428
1460
1454
1446
27.46
29.59
31.91
22.31
23.82
25.54
18.91
19.90
21.01
16.07
17.03
17.98
5” SP
RPM
BHP
1487
1513
1541
1417
1438
1462
1372
1383
1399
1374
1367
1367
BHP
5” SP
RPM
15.26
16.38
17.59
12.38
13.26
14.21
10.26
10.88
11.59
9.24
9.72
BHP
1664
1684
1705
1623
1633
1647
1622
1617
1617
17.05
18.19
19.43
14.16
15.03
15.99
12.08
12.69
13.38
BHP
7” SP
RPM
1753
1768
1787
1728
1732
1741
1735
1729
18.96
20.11
21.35
16.09
16.95
17.90
14.65
15.33
BHP
8” SP
RPM
1578
1592
1610
1566
1564
1568
1589
1580
1572
1596
31.30
33.35
35.63
26.52
27.90
29.48
23.04
24.16
25.30
21.90
6” SP
RPM
BHP
1690
1696
1706
1702
1694
1690
1726
1719
1711
35.71
37.63
39.80
31.18
32.54
34.03
27.21
28.55
29.87
7” SP
RPM
BHP
1808
1806
1809
1831
1823
1814
1846
1839
40.67
42.47
44.50
36.03
37.52
39.04
32.97
34.52
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1906
1576
1599
1624
1519
1535
1554
1496
1499
1507
1509
1500
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1906
13
833
1000
1170
1330
1500
1670
1830
2000
2170
2330
2500
2670
2830
3000
3170
3330
3500
3670
3830
4000
4170
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
9500
10000
10500
11000
11500
12000
12500
536
452
479
508
393
405
426
1.30
0.66
0.84
1.05
0.31
0.40
0.51
BHP
1/2” SP
RPM
672
587
615
643
509
533
559
487
481
490
2.60
1.53
1.84
2.20
0.84
1.03
1.26
0.48
0.57
0.68
BHP
3/4” SP
RPM
714
742
771
631
658
686
565
583
606
559
556
RPM
2.90
3.38
3.91
1.77
2.10
2.47
1.04
1.24
1.48
0.77
0.88
BHP
1” SP
837
866
752
780
808
673
698
724
622
633
650
623
RPM
833
1000
1170
1330
1500
1670
1830
2000
2170
2330
2500
2670
2830
3000
3170
3330
3500
3670
3830
4000
4170
5000
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
21000
22000
23000
24000
25000
530
445
472
500
415
411
423
2.65
1.33
1.70
2.14
0.70
0.83
1.04
1/2” SP
RPM
BHP
665
577
606
635
509
526
550
515
509
503
5.33
3.10
3.75
4.49
1.71
2.08
2.55
1.08
1.26
1.45
3/4” SP
RPM
BHP
704
733
763
622
647
675
581
585
600
594
587
5.90
6.90
8.01
3.56
4.24
5.02
2.21
2.54
2.99
1.72
1.96
1” SP
RPM
BHP
826
856
740
768
797
667
688
713
655
649
653
663
9.95
11.36
6.47
7.51
8.67
4.07
4.75
5.55
2.79
3.11
3.52
2.50
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 17 7/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 6.00 SQ. FT.
957
870
899
927
787
814
842
713
736
760
681
683
695
689
7.54
5.23
5.93
6.70
3.50
4.02
4.59
2.26
2.62
3.03
1.51
1.71
1.96
1.36
BHP
1 1/2” SP
RPM
1102
1015
1044
1073
931
959
987
853
878
904
795
810
830
797
787
786
RPM
11.50
8.39
9.34
10.38
5.95
6.70
7.51
4.11
4.66
5.28
2.82
3.19
3.62
2.08
2.28
2.52
BHP
2” SP
1153
1182
1211
1068
1097
1125
987
1014
1041
917
938
962
879
886
899
890
880
RPM
12.47
13.72
15.05
9.24
10.24
11.31
6.68
7.46
8.31
4.76
5.33
5.97
3.46
3.82
4.26
2.92
3.16
BHP
2 1/2” SP
TIP SPEED = RPM x 4.68
1201
1229
1258
1118
1145
1173
1041
1066
1091
981
998
1018
964
962
969
973
13.45
14.74
16.12
10.09
11.13
12.25
7.44
8.25
9.13
5.46
6.04
6.70
4.17
4.53
4.96
3.88
BHP
3” SP
RPM
1246
1274
1302
1165
1192
1218
1094
1116
1140
1046
1058
1074
1049
1040
1040
RPM
14.43
15.76
17.18
10.95
12.03
13.19
8.22
9.05
9.96
6.22
6.81
7.47
4.95
5.30
5.72
BHP
3 1/2” SP
1289
1316
1343
1211
1236
1262
1147
1166
1188
1112
1118
1130
1118
1111
RPM
946
857
887
916
774
801
829
716
730
750
724
716
711
729
15.43
10.64
12.10
13.70
7.06
8.12
9.32
4.66
5.32
6.12
3.40
3.76
4.15
3.04
1 1/2” SP
RPM
BHP
1090
1001
1030
1060
916
944
972
845
866
890
823
822
830
842
837
830
23.54
17.08
19.07
21.22
12.03
13.56
15.25
8.33
9.41
10.64
6.08
6.66
7.41
4.64
5.13
5.60
2” SP
RPM
BHP
1138
1167
1197
1051
1080
1108
974
998
1024
922
934
952
929
921
918
941
937
25.44
28.03
30.80
18.71
20.78
23.02
13.48
15.06
16.80
9.83
10.86
12.08
7.72
8.31
8.99
6.51
7.13
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 4.68
1183
1211
1241
1100
1127
1154
1033
1052
1075
1006
1008
1017
1026
1018
1010
1030
27.30
29.98
32.85
20.36
22.50
24.81
15.08
16.65
18.41
11.60
12.55
13.71
9.40
10.11
10.82
8.67
3” SP
RPM
BHP
1226
1254
1282
1149
1173
1199
1095
1109
1128
1092
1087
1087
1112
1107
1100
29.18
31.93
34.88
22.10
24.26
26.62
16.87
18.39
20.14
13.60
14.50
15.57
11.09
11.95
12.77
3 1/2” SP
RPM
BHP
1268
1294
1322
1199
1220
1243
1162
1169
1182
1175
1167
1162
1188
1182
31.10
33.90
36.92
23.96
26.12
28.50
18.89
20.33
22.02
15.70
16.65
17.68
13.79
14.76
4” SP
RPM
BHP
STD. BALANCE RPM: 1700
15.41
16.78
18.24
11.84
12.94
14.13
9.05
9.89
10.82
7.05
7.62
8.29
6.14
6.55
BHP
4” SP
STD. BALANCE RPM: 1700
SIZE 1 3/8 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
4.87
5.55
3.20
3.70
4.25
2.01
2.36
2.75
1.26
1.46
1.71
1.11
BHP
1 1/4” SP
WHEEL BLADE DIA. = 17 7/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.00 SQ. FT.
SIZE 1 3/8 — DF TYPE DFB UNITARY FAN — SINGLE FAN
17.41
18.85
20.38
13.68
14.83
16.07
10.83
11.68
12.63
8.87
9.43
10.08
1354
1376
1400
1306
1318
1334
1303
1299
1299
1325
1319
1311
35.17
38.01
41.10
28.17
30.23
32.57
23.54
24.86
26.38
19.99
21.18
22.35
5” SP
RPM
BHP
1370
1395
1421
1301
1322
1345
1253
1265
1282
1245
1242
1244
BHP
5” SP
RPM
19.49
20.97
22.56
15.67
16.83
18.11
12.83
13.67
14.61
11.46
12.09
BHP
1526
1546
1568
1481
1493
1508
1471
1469
1473
21.67
23.19
24.82
17.82
18.98
20.27
15.02
15.84
16.77
BHP
7” SP
RPM
1604
1621
1640
1573
1580
1590
1573
1571
23.99
25.52
27.17
20.14
21.30
22.58
18.20
19.11
BHP
8” SP
RPM
1444
1460
1479
1422
1424
1431
1440
1432
1425
1454
1448
39.73
42.52
45.60
33.16
35.06
37.24
28.64
30.05
31.52
25.78
27.23
6” SP
RPM
BHP
1540
1549
1562
1542
1537
1536
1566
1558
1550
44.95
47.59
50.56
38.80
40.60
42.63
33.84
35.50
37.13
7” SP
RPM
BHP
1642
1643
1649
1660
1652
1645
1675
1668
50.84
53.31
56.11
44.78
46.67
48.65
41.01
42.92
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1731
1448
1471
1496
1390
1407
1427
1361
1366
1377
1367
1361
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1731
14
849
1020
1190
1360
1530
1700
1870
2040
2210
2380
2550
2720
2890
3060
3230
3400
3570
3740
3910
4080
4250
3000
3600
4200
4800
5400
6000
6600
7200
7800
8400
9000
9600
10200
10800
11400
12000
12600
13200
13800
14400
15000
442
388
404
422
374
368
374
1.27
0.69
0.85
1.04
0.39
0.46
0.56
BHP
1/2” SP
RPM
552
495
513
531
453
464
478
457
459
452
2.53
1.55
1.83
2.16
0.93
1.10
1.31
0.62
0.71
0.80
BHP
3/4” SP
RPM
595
613
634
544
560
577
522
522
531
538
530
RPM
2.88
3.32
3.81
1.85
2.15
2.49
1.22
1.38
1.59
0.98
1.09
BHP
1” SP
690
711
635
653
671
591
604
619
591
583
584
604
600
RPM
849
1020
1190
1360
1530
1700
1870
2040
2210
2380
2550
2720
2890
3060
3230
3400
3570
3740
3910
4080
4250
6000
7200
8400
9600
10800
12000
13200
14400
15600
16800
18000
19200
20400
21600
22800
24000
25200
26400
27600
28800
30000
449
390
406
426
368
370
378
2.80
1.49
1.84
2.27
0.81
0.98
1.20
1/2” SP
RPM
BHP
563
497
517
539
457
467
481
453
451
451
5.62
3.37
4.00
4.75
2.01
2.38
2.83
1.24
1.45
1.70
3/4” SP
RPM
BHP
600
622
646
547
562
580
521
526
535
522
520
6.30
7.30
8.44
4.01
4.66
5.42
2.59
2.99
3.46
1.97
2.26
1” SP
RPM
BHP
701
725
638
657
678
596
608
622
581
583
588
586
583
10.52
11.97
7.05
8.07
9.22
4.72
5.39
6.16
3.22
3.64
4.14
2.52
2.85
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 19 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 7.06 SQ. FT.
660
725
744
764
674
690
708
640
647
659
654
645
638
5.20
5.84
6.54
3.63
4.10
4.63
2.53
2.84
3.21
1.91
2.08
2.28
1.73
BHP
1 1/2” SP
RPM
904
844
863
883
792
809
826
749
761
776
740
737
740
763
757
748
RPM
11.16
8.31
9.18
10.13
6.11
6.78
7.51
4.44
4.94
5.49
3.36
3.65
4.01
2.64
2.89
3.12
BHP
2” SP
956
975
996
902
919
938
854
869
885
825
831
841
838
829
824
853
847
RPM
12.30
13.44
14.67
9.37
10.27
11.25
7.05
7.76
8.53
5.35
5.84
6.41
4.31
4.60
4.94
3.71
4.02
BHP
2 1/2” SP
TIP SPEED = RPM x 5.10
1007
1025
1044
956
973
990
916
927
941
903
903
907
928
919
909
934
13.50
14.66
15.91
10.45
11.40
12.41
8.06
8.78
9.58
6.39
6.86
7.41
5.30
5.65
5.99
4.93
BHP
3” SP
RPM
1056
1073
1091
1009
1024
1039
978
985
996
983
976
975
1007
1001
992
RPM
14.73
15.93
17.22
11.58
12.55
13.60
9.15
9.87
10.68
7.53
7.99
8.52
6.30
6.73
7.13
BHP
3 1/2” SP
1103
1119
1136
1061
1074
1088
1042
1045
1051
1059
1050
1044
1076
1069
RPM
732
753
776
678
694
712
644
653
664
638
637
639
640
11.37
12.83
14.46
7.87
8.89
10.06
5.47
6.17
6.96
3.89
4.35
4.87
3.48
1 1/2” SP
RPM
BHP
922
853
875
898
795
813
832
755
766
780
736
740
746
740
737
735
24.80
18.20
20.20
22.40
13.23
14.72
16.37
9.64
10.70
11.90
7.10
7.85
8.69
5.31
5.85
6.44
2” SP
RPM
BHP
967
990
1014
906
925
946
860
874
889
830
838
848
822
822
825
827
824
27.00
29.63
32.48
20.33
22.36
24.58
15.29
16.80
18.48
11.56
12.68
13.92
8.86
9.67
10.56
7.46
8.13
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 5.10
1014
1034
1055
961
977
995
923
934
947
903
907
914
903
901
901
906
29.38
32.03
34.91
22.64
24.69
26.93
17.49
19.05
20.76
13.61
14.78
16.07
10.73
11.60
12.56
9.91
3” SP
RPM
BHP
1061
1079
1098
1016
1029
1044
985
994
1004
973
975
979
978
975
973
31.92
34.59
37.49
25.09
27.18
29.45
19.81
21.42
23.18
15.78
17.00
18.34
12.68
13.64
14.66
3 1/2” SP
RPM
BHP
1109
1124
1141
1070
1081
1094
1046
1052
1060
1040
1040
1042
1044
1042
34.61
37.31
40.22
27.67
29.80
32.11
22.24
23.90
25.71
18.04
19.32
20.72
15.75
16.86
4” SP
RPM
BHP
STD. BALANCE RPM: 1600
15.98
17.22
18.55
12.75
13.74
14.82
10.34
11.04
11.85
8.76
9.22
9.74
7.82
8.30
BHP
4” SP
STD. BALANCE RPM: 1600
SIZE 1 1/2 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
4.77
5.39
3.25
3.70
4.21
2.17
2.49
2.85
1.55
1.71
1.91
1.25
1.41
BHP
1 1/4” SP
WHEEL BLADE DIA. = 19 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.53 SQ. FT.
SIZE 1 1/2 — DF TYPE DFB UNITARY FAN — SINGLE FAN
18.60
19.89
21.28
15.32
16.30
17.40
13.03
13.69
14.45
11.28
11.87
12.44
1203
1215
1229
1175
1183
1192
1163
1165
1169
1166
1164
1163
1169
40.34
43.12
46.10
33.14
35.36
37.76
27.39
29.16
31.07
22.81
24.23
25.76
21.45
5” SP
RPM
BHP
1194
1207
1222
1167
1173
1183
1172
1167
1165
1199
1191
1181
BHP
5” SP
RPM
21.43
22.73
24.16
18.24
19.18
20.24
15.99
16.68
17.41
14.59
15.30
BHP
1379
1383
1390
1388
1382
1378
1415
1406
1397
1422
24.54
25.82
27.23
21.48
22.39
23.40
19.05
19.86
20.65
18.21
BHP
7” SP
RPM
1475
1473
1475
1496
1487
1480
1515
1506
27.97
29.19
30.56
24.95
25.88
26.87
23.11
24.04
BHP
8” SP
RPM
1296
1305
1316
1277
1282
1288
1274
1274
1275
1278
1276
46.47
49.34
52.41
38.96
41.29
43.79
32.88
34.76
36.79
29.42
31.10
6” SP
RPM
BHP
1387
1393
1401
1376
1378
1381
1379
1377
1376
1381
52.94
55.91
59.08
45.10
47.54
50.15
38.63
40.67
42.82
36.69
7” SP
RPM
BHP
1475
1479
1485
1471
1471
1472
1474
1472
59.70
62.77
66.05
51.53
54.09
56.81
46.81
49.11
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1650
1285
1294
1306
1277
1276
1279
1299
1289
1282
1316
1308
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1650
15
838
943
1050
1150
1260
1360
1470
1570
1680
1890
2100
2310
2520
2730
2940
3140
3350
3560
3770
3980
4190
4000
4500
5000
5500
6000
6500
7000
7500
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
379
340
349
359
319
324
332
321
317
316
1.73
1.05
1.20
1.36
0.72
0.81
0.93
0.52
0.57
0.63
BHP
1/2” SP
RPM
424
443
464
393
400
407
388
387
388
400
397
393
2.12
2.60
3.17
1.39
1.54
1.72
1.05
1.14
1.25
0.82
0.90
0.97
BHP
3/4” SP
RPM
521
542
466
483
501
447
449
453
456
451
448
463
460
RPM
4.32
5.12
2.53
3.04
3.63
1.78
1.93
2.10
1.45
1.54
1.65
1.24
1.35
BHP
1” SP
555
574
594
507
521
537
502
499
500
515
511
507
517
RPM
838
943
1050
1150
1260
1360
1470
1570
1680
1890
2100
2310
2520
2730
2940
3140
3350
3560
3770
3980
4190
8000
9000
10000
11000
12000
13000
14000
15000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
385
342
351
362
321
327
334
315
315
317
3.83
2.29
2.60
2.97
1.55
1.76
2.01
1.07
1.21
1.37
BHP
1/2” SP
RPM
427
447
471
396
402
409
386
388
392
388
387
386
4.60
5.68
7.00
3.01
3.34
3.72
2.22
2.45
2.72
1.66
1.83
2.01
BHP
3/4” SP
RPM
527
552
469
485
505
449
452
457
446
446
446
449
447
RPM
9.50
11.36
5.48
6.59
7.92
3.82
4.18
4.57
2.96
3.22
3.50
2.50
2.72
BHP
1” SP
558
580
603
511
524
539
499
500
503
500
499
498
502
RPM
10.54
12.41
14.59
6.44
7.58
8.93
4.70
5.08
5.49
3.76
4.05
4.36
3.48
BHP
1 1/4” SP
WHEEL BLADE DIA. = 22 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 9.54 SQ. FT.
644
665
587
605
624
548
557
571
556
551
548
567
565
561
8.29
9.52
5.38
6.24
7.20
3.45
3.98
4.63
2.74
2.88
3.04
2.28
2.44
2.59
BHP
1 1/2” SP
RPM
758
699
717
737
649
664
681
634
632
637
652
648
643
654
RPM
13.84
9.59
10.86
12.27
6.50
7.41
8.44
4.58
5.08
5.72
3.79
3.99
4.18
3.58
BHP
2” SP
804
824
844
750
767
785
710
720
734
718
709
706
730
727
RPM
15.36
17.14
19.09
10.94
12.27
13.75
7.74
8.66
9.73
5.87
6.37
6.97
5.13
5.39
BHP
2 1/2” SP
TIP SPEED = RPM x 5.95
801
849
867
886
799
814
831
773
777
786
795
785
777
16.95
18.78
20.78
12.34
13.73
15.27
9.12
10.02
11.10
7.22
7.80
8.40
6.60
BHP
3” SP
RPM
892
909
927
848
860
875
838
835
839
863
856
846
RPM
18.57
20.47
22.53
13.83
15.25
16.83
10.67
11.53
12.58
8.59
9.29
9.96
BHP
3 1/2” SP
933
949
966
897
906
918
902
895
893
921
912
RPM
653
678
590
609
630
552
562
574
546
546
547
550
548
547
18.25
21.10
11.66
13.55
15.74
7.47
8.65
10.03
5.64
6.04
6.47
4.59
4.92
5.27
BHP
1 1/2” SP
RPM
771
703
723
746
654
668
684
631
635
643
633
632
631
634
RPM
30.62
20.83
23.72
26.98
14.11
16.05
18.29
9.68
10.95
12.42
7.64
8.11
8.60
7.20
BHP
2” SP
811
834
858
754
771
790
716
726
739
705
705
709
708
707
RPM
33.58
37.68
42.20
23.68
26.61
29.90
16.78
18.80
21.09
12.08
13.44
15.00
10.31
10.88
BHP
2 1/2” SP
TIP SPEED = RPM x 5.95
853
873
895
805
819
835
776
783
793
774
772
773
777
36.79
40.92
45.48
26.76
29.74
33.07
19.62
21.72
24.10
14.63
16.10
17.75
13.27
BHP
3” SP
RPM
896
913
932
855
866
880
835
839
845
838
835
834
RPM
40.22
44.38
48.98
30.01
33.06
36.46
22.61
24.81
27.27
17.28
18.90
20.66
BHP
3 1/2” SP
938
954
971
904
913
925
891
893
897
895
892
RPM
43.84
48.05
52.69
33.41
36.55
40.01
25.75
28.04
30.58
21.80
23.69
BHP
4” SP
STD. BALANCE RPM: 1400
20.23
22.19
24.31
15.42
16.84
18.45
12.35
13.19
14.20
10.81
11.59
BHP
4” SP
STD. BALANCE RPM: 1400
SIZE 1 3/4 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
4.84
5.67
6.61
2.97
3.50
4.12
2.23
2.37
2.54
1.86
1.99
2.11
1.73
BHP
1 1/4” SP
WHEEL BLADE DIA. = 22 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 4.77 SQ. FT.
SIZE 1 3/4 — DF TYPE DFB UNITARY FAN — SINGLE FAN
1001
RPM
1022
1034
1047
1000
1005
1013
998
997
997
23.74
25.77
27.99
18.99
20.35
21.93
15.91
16.86
17.85
14.92
51.54
55.89
60.64
40.62
43.93
47.56
32.38
34.88
37.61
30.05
BHP
5” SP
1014
1026
1041
999
999
1005
1023
1013
1004
1031
BHP
5” SP
RPM
27.61
29.62
31.87
23.05
24.35
25.85
19.55
20.75
21.89
BHP
1182
1183
1188
1203
1193
1185
1220
1212
31.91
33.85
36.06
27.43
28.77
30.23
24.69
26.09
BHP
7” SP
RPM
1268
1264
1263
1296
1286
1276
1303
36.63
38.49
40.63
31.93
33.45
34.99
30.33
BHP
8” SP
RPM
1104
1113
1123
1092
1094
1098
1096
1094
1092
RPM
59.75
64.27
69.17
48.31
51.79
55.60
39.37
42.14
45.11
BHP
6” SP
1184
1190
1197
1180
1179
1181
1184
1182
RPM
68.41
73.10
78.18
56.41
60.09
64.08
49.73
52.97
BHP
7” SP
1262
1265
1270
1263
1261
1261
1266
RPM
77.47
82.34
87.59
64.84
68.77
72.96
61.13
BHP
8” SP
MAX. RPM WITH REINFORCMENT: 1450
1097
1104
1114
1103
1096
1094
1129
1122
1112
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1450
16
963
1120
1280
1440
1610
1770
1930
2090
2250
2410
2570
2730
2890
3050
3210
3370
3530
3690
3850
4010
4170
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
21000
22000
23000
24000
25000
26000
369
317
334
351
272
285
300
2.89
1.55
1.93
2.38
0.73
0.95
1.23
BHP
1/2” SP
RPM
404
422
439
355
371
387
326
329
341
3.40
4.04
4.75
1.92
2.35
2.84
1.02
1.24
1.55
BHP
3/4” SP
RPM
487
504
523
436
452
469
390
404
420
386
377
380
RPM
6.20
7.15
8.21
3.91
4.59
5.35
2.28
2.75
3.29
1.39
1.59
1.89
BHP
1” SP
566
584
514
531
548
465
481
497
425
436
449
427
421
RPM
963
1120
1280
1440
1610
1770
1930
2090
2250
2410
2570
2730
2890
3050
3210
3370
3530
3690
3850
4010
4170
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
42000
44000
46000
48000
50000
52000
369
313
331
350
281
285
297
5.96
3.15
3.95
4.88
1.64
1.99
2.50
1/2” SP
RPM
BHP
401
420
439
353
367
383
350
345
345
6.94
8.27
9.79
3.95
4.77
5.77
2.53
2.88
3.32
3/4” SP
RPM
BHP
485
504
523
431
448
466
397
404
416
407
404
399
12.72
14.72
16.94
7.92
9.32
10.92
4.95
5.72
6.72
3.44
3.92
4.39
1” SP
RPM
BHP
565
584
509
528
546
461
475
492
446
444
450
455
451
20.87
23.65
13.93
16.01
18.32
8.99
10.41
12.06
6.17
6.87
7.80
4.99
5.58
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 26”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 12.46 SQ. FT.
644
589
607
625
539
555
572
492
507
523
461
467
478
478
464
15.38
10.90
12.27
13.76
7.47
8.52
9.66
4.87
5.65
6.52
3.08
3.57
4.17
2.49
2.72
BHP
1 1/2” SP
RPM
739
684
702
720
633
650
667
585
601
617
543
556
570
539
532
535
RPM
23.12
17.17
19.00
20.98
12.43
13.89
15.47
8.69
9.84
11.08
5.85
6.69
7.64
4.10
4.53
5.12
BHP
2” SP
774
792
810
723
740
757
673
690
706
627
642
657
596
603
614
603
596
RPM
25.16
27.53
30.07
18.96
20.89
22.95
13.92
15.48
17.16
9.88
11.12
12.46
6.92
7.77
8.77
5.71
6.22
BHP
2 1/2” SP
TIP SPEED = RPM x 6.81
809
826
843
758
775
792
711
726
742
669
681
696
653
653
659
660
27.22
29.67
32.29
20.71
22.75
24.91
15.36
17.02
18.81
11.11
12.40
13.82
8.15
8.96
9.96
7.52
BHP
3” SP
RPM
841
858
875
792
808
824
746
761
776
711
720
732
712
705
705
RPM
29.25
31.80
34.51
22.43
24.57
26.84
16.79
18.54
20.42
12.40
13.71
15.18
9.56
10.30
11.25
BHP
3 1/2” SP
872
888
905
824
839
855
781
794
809
754
760
769
759
753
RPM
644
587
606
625
533
550
568
492
503
517
492
488
487
499
497
31.74
22.32
25.20
28.34
15.15
17.30
19.69
10.19
11.59
13.25
7.50
8.21
9.07
6.07
6.80
1 1/2” SP
RPM
BHP
739
681
700
719
627
645
663
581
594
610
562
563
570
575
571
565
47.71
35.17
39.05
43.22
25.23
28.27
31.58
17.82
20.00
22.48
13.12
14.37
15.93
10.24
11.19
12.12
2” SP
RPM
BHP
772
791
810
716
734
753
666
682
699
632
640
652
634
629
628
643
639
51.63
56.63
61.97
38.55
42.59
46.95
28.28
31.39
34.82
20.93
23.04
25.49
16.58
17.79
19.20
14.23
15.43
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 6.81
803
821
840
750
767
785
707
719
734
688
690
696
700
695
690
704
55.4
60.6
66.1
42.0
46.1
50.6
31.6
34.7
38.1
24.6
26.5
28.8
20.2
21.6
23.0
18.7
3” SP
RPM
BHP
833
850
868
784
799
815
749
758
770
746
743
744
760
756
751
59.3
64.6
70.3
45.6
49.8
54.4
35.3
38.3
41.8
28.8
30.6
32.7
23.8
25.5
27.1
3 1/2” SP
RPM
BHP
862
879
896
818
831
846
795
799
807
803
798
794
812
808
63.3
68.7
74.5
49.5
53.7
58.3
39.5
42.4
45.7
33.2
35.1
37.1
29.4
31.3
4” SP
RPM
BHP
STD. BALANCE RPM: 1000
31.24
33.90
36.72
24.11
26.35
28.72
18.24
20.05
22.01
13.78
15.09
16.59
11.80
12.68
BHP
4” SP
STD. BALANCE RPM: 1000
SIZE 2 — DF TYPE DFB DUPLEX FAN — DOUBLE FAN
10.13
11.46
6.84
7.84
8.93
4.39
5.13
5.94
2.66
3.15
3.73
2.00
2.27
BHP
1 1/4” SP
WHEEL BLADE DIA. = 26”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 6.23 SQ. FT.
SIZE 2 — DF TYPE DFB UNITARY FAN — SINGLE FAN
35.13
38.00
41.02
27.46
29.86
32.42
21.29
23.17
25.23
16.97
18.17
19.62
16.02
922
935
950
892
899
909
891
888
889
906
901
896
909
71.8
77.3
83.2
58.4
62.3
66.8
49.3
51.9
54.9
42.3
44.6
46.9
39.9
5” SP
RPM
BHP
929
945
961
884
899
914
850
860
871
845
841
844
854
BHP
5” SP
RPM
38.95
42.00
45.21
30.90
33.40
36.09
24.67
26.51
28.60
21.77
23.08
BHP
1035
1049
1063
1004
1012
1023
998
996
998
1006
42.81
45.98
49.35
34.54
37.07
39.83
28.49
30.22
32.25
27.06
BHP
7” SP
RPM
1087
1098
1111
1065
1070
1077
1068
1065
46.78
50.04
53.52
38.48
40.98
43.76
34.38
36.27
BHP
8” SP
RPM
985
994
1006
973
974
977
985
980
975
994
990
81.5
86.8
92.6
68.9
72.5
76.7
60.0
62.8
65.7
54.3
57.2
6” SP
RPM
BHP
1052
1057
1064
1056
1052
1051
1071
1066
1061
1074
92.5
97.5
103.1
80.7
84.2
88.1
70.9
74.2
77.4
67.5
7” SP
RPM
BHP
1124
1123
1126
1136
1131
1 26
1146
1141
104.9
109.6
114.9
93.2
96.9
100.7
85.7
89.5
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1189
983
998
1013
944
956
969
922
926
934
929
923
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1189
17
769
961
1150
1350
1840
1730
1920
2120
2310
2500
2690
2880
3080
3270
3460
3650
3850
4040
4230
4420
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
1049
869
923
984
778
788
822
0.53
0.25
0.33
0.42
0.11
0.15
0.19
BHP
1/2” SP
RPM
1143
1204
1268
993
1035
1086
963
982
963
0.63
0.77
0.94
0.33
0.41
0.51
0.18
0.22
0.26
BHP
3/4” SP
RPM
1409
1474
1234
1288
1347
1113
1143
1185
1106
1100
RPM
1.25
1.48
0.73
0.88
1.05
0.41
0.50
0.60
0.29
0.34
BHP
1” SP
1671
1481
1541
1605
1322
1370
1423
1232
1249
1280
1232
RPM
769
961
1150
1350
1840
1730
1920
2120
2310
2500
2690
2880
3080
3270
3460
3650
3850
4040
4230
4420
1600
2000
2400
2800
3200
3600
4000
4400
4800
5200
5600
6000
6400
6800
7200
7600
8000
8400
8800
9200
1107
893
957
1030
799
812
843
1.20
0.55
0.72
0.94
0.24
0.31
0.41
1/2” SP
RPM
BHP
1187
1259
1337
1019
1062
1120
975
979
992
1.38
1.71
2.10
0.70
0.88
1.11
0.37
0.46
0.56
3/4” SP
RPM
BHP
1477
1555
1269
1332
1402
1147
1173
1215
1127
1133
2.78
3.32
1.58
1.92
2.32
0.88
1.06
1.29
0.61
0.73
1” SP
RPM
BHP
1766
1538
1611
1687
1355
1408
1470
1269
1286
1314
1261
4.89
3.02
3.56
4.18
1.79
2.13
2.55
1.08
1.26
1.50
0.91
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 9 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.08 SQ. FT.
1730
1795
1551
1608
1668
1408
1450
1498
1347
1353
1374
1357
2.32
2.66
1.50
1.74
2.01
0.94
1.10
1.29
0.60
0.69
0.81
0.53
BHP
1 1/2” SP
RPM
2032
2097
1847
1906
1968
1688
1737
1790
1577
1606
1644
1565
1556
1559
RPM
3.80
4.28
2.62
2.98
3.37
1.76
2.02
2.31
1.18
1.34
1.54
0.82
0.92
1.04
BHP
2” SP
2131
2193
1960
2014
2071
1821
1863
1909
1743
1759
1786
1748
1739
RPM
4.16
4.65
2.94
3.31
3.72
2.05
2.31
2.61
1.44
1.61
1.81
1.17
1.29
BHP
2 1/2” SP
TIP SPEED = RPM x 2.55
2407
2471
2228
2286
2346
2071
2120
2173
1952
1986
2026
1905
1909
1926
1912
6.17
6.81
4.53
5.03
5.88
3.27
3.65
4.07
2.35
2.62
2.93
1.72
1.90
2.11
1.57
BHP
3” SP
RPM
2492
2553
2323
2377
2434
2180
2224
2272
2081
2107
2140
2062
2057
2064
RPM
6.59
7.24
4.91
5.42
5.98
3.61
4.00
4.43
2.66
2.94
3.26
2.02
2.21
2.42
BHP
3 1/2” SP
2876
2634
2417
2467
2520
2287
2326
2369
2208
2227
2253
2202
2200
RPM
1815
1893
1601
1668
1740
1444
1487
1540
1384
1395
1414
1379
5.17
5.97
3.27
3.82
4.46
2.01
2.36
2.78
1.28
1.48
1.72
1.10
1 1/2” SP
RPM
BHP
2136
2215
1915
1985
2059
1731
1786
1848
1624
1649
1685
1593
1598
1607
8.50
9.61
5.76
6.58
7.49
3.80
4.37
5.03
2.52
2.87
3.30
1.71
1.95
2.22
2” SP
RPM
BHP
2219
2293
2018
2081
2148
1868
1910
1960
1796
1812
1835
1781
1787
9.19
10.32
6.38
7.22
8.16
4.37
4.96
5.63
3.08
3.45
3.87
2.44
2.75
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 2.55
2519
2595
2304
2373
2445
2125
2179
2239
2007
2037
2077
1958
1968
1984
1952
13.69
15.19
9.91
11.06
12.32
7.04
7.90
8.85
5.01
5.60
6.27
3.66
4.07
4.51
3.29
3” SP
RPM
BHP
2591
2664
2392
2455
2521
2235
2281
2333
2144
2166
2196
2110
2117
2128
14.50
16.02
10.65
11.83
13.11
7.74
8.61
9.58
5.70
6.29
6.96
4.26
4.71
5.18
3 1/2” SP
RPM
BHP
2665
2734
2481
2538
2599
2347
2385
2430
2277
2294
2317
2257
2265
15.34
16.88
11.42
12.62
13.92
8.48
9.35
10.33
6.43
7.03
7.71
5.36
5.88
4” SP
RPM
BHP
STD. BALANCE RPM: 2400
7.01
7.68
5.29
5.82
6.39
3.97
4.37
4.81
3.00
3.29
3.61
2.54
2.75
BHP
4” SP
STD. BALANCE RPM: 2400
SIZE 3/4 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
2.17
1.37
1.61
1.87
0.83
0.99
1.17
0.50
0.59
0.70
0.43
BHP
1 1/4” SP
WHEEL BLADE DIA. = 9 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 1.04 SQ. FT.
SIZE 3/4 — DF TYPE DFC UNITARY FAN — SINGLE FAN
7.89
8.58
6.10
6.65
7.25
4.73
5.14
5.60
3.73
4.02
4.35
3.47
2816
2876
2666
2710
2761
2572
2596
2628
2529
2539
2553
2522
17.08
18.66
13.06
14.28
15.62
10.11
10.98
11.96
7.94
8.61
9.32
7.31
5” SP
RPM
BHP
2740
2792
2600
2643
2690
2498
2526
2561
2459
2463
2476
2464
BHP
5” SP
RPM
8.81
9.52
6.96
7.53
8.14
5.55
5.97
6.44
4.52
4.82
5.17
BHP
3057
3098
2957
2986
3019
2911
2919
2935
2910
9.76
10.50
7.87
8.45
9.08
6.43
6.86
7.34
6.03
BHP
7” SP
RPM
3133
3154
3111
3111
3118
8.83
9.42
7.36
7.80
8.29
BHP
8” SP
RPM
2973
3024
2855
2889
2928
2790
2806
2828
2762
2768
2777
18.91
20.53
14.86
16.09
17.43
11.88
12.78
13.77
9.50
10.26
11.04
6” SP
RPM
BHP
3135
3044
3069
3099
2998
3009
3025
2989
20.88
16.82
18.04
19.39
13.73
14.68
15.71
12.82
7” SP
RPM
BHP
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 3450
2900
2947
2780
2816
2856
2706
2724
2749
2700
2694
2696
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 3450
18
802
925
1050
1170
1300
1420
1540
1670
1790
1910
2040
2160
2280
2410
2530
2650
2960
3270
3580
3890
4200
1300
1500
1700
1900
2100
2300
2500
2700
2900
3100
3300
3500
3700
3900
4100
4300
4800
5300
5800
6300
6800
885
785
817
860
699
726
755
648
654
673
0.80
0.50
0.59
0.69
0.29
0.35
0.42
0.16
0.20
0.24
BHP
1/2” SP
RPM
1067
967
999
1032
879
908
937
806
827
852
815
797
794
1.38
0.94
1.07
1.22
0.61
0.71
0.82
0.38
0.44
0.52
0.26
0.29
0.32
BHP
3/4” SP
RPM
1237
1136
1168
1202
1046
1075
1105
964
990
1017
916
923
941
942
923
RPM
2.16
1.55
1.74
1.94
1.08
1.22
1.38
0.72
0.83
0.95
0.48
0.55
0.63
0.41
0.44
BHP
1” SP
1296
1382
1203
1233
1264
1118
1146
1174
1045
1066
1091
1032
1024
1029
1050
RPM
802
925
1060
1170
1300
1420
1540
1670
1790
1910
2040
2160
2280
2410
2530
2650
2960
3270
3580
3890
4200
2600
3000
3400
3800
4200
4600
5000
5400
5800
6200
6600
7000
7400
7800
8200
8600
9600
10600
11600
12600
13600
922
809
845
883
716
744
775
672
678
694
1.74
1.07
1.26
1.49
0.62
0.76
0.90
0.36
0.43
0.52
1/2” SP
RPM
BHP
1110
998
1034
1071
901
931
963
834
851
874
833
824
825
3.01
2.01
2.31
2.64
1.30
1.51
1.75
0.83
0.96
1.12
0.56
0.63
0.72
3/4” SP
RPM
BHP
1287
1174
1210
1248
1072
1104
1138
991
1015
1042
951
958
971
962
953
4.70
3.33
3.75
4.20
2.30
2.61
2.95
1.56
1.78
2.02
1.07
1.20
1,37
0.86
0.96
1” SP
RPM
BHP
1342
1438
1236
1270
1305
1145
1173
1204
1080
1098
1120
1065
1063
1068
1074
6.08
6.54
3.67
4.10
4.67
2.60
2.92
3.28
1.83
2.06
2.31
1.34
1.47
1.64
1.22
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 11 3/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.24
1355
1435
1521
1267
1296
1325
1185
1211
1239
1127
1141
1161
1147
1129
1122
2.55
3.22
4.03
1.88
2.09
2.31
1.35
1.51
1.69
0.96
1.08
1.20
0.76
0.81
0.88
BHP
1 1/2” SP
RPM
1700
1789
1467
1540
1617
1384
1411
1439
1316
1335
1358
1299
1295
1302
1314
RPM
5.49
6.65
2.94
3.66
4.50
2.21
2.43
2.68
1.64
1.81
2.00
1.27
1.37
1.49
1.20
BHP
2” SP
1788
1869
1569
1639
1712
1494
1517
1542
1449
1459
1474
1476
1458
1449
RPM
6.01
7.20
3.31
4.09
4.99
2.54
2.78
3.04
1.97
2.14
2.33
1.65
1.73
1.84
BHP
2 1/2” SP
TIP SPEED = RPM x 2.98
1874
1950
2031
1665
1731
1801
1604
1621
1642
1590
1586
1591
1620
1602
6.54
7.77
9.16
3.69
4.51
5.46
2.90
3.14
3.41
2.37
2.51
2.69
2.15
2.25
BHP
3” SP
RPM
1957
2030
2106
1759
1818
1886
1716
1725
1740
1733
1719
1713
RPM
7.06
8.34
9.77
4.09
4.94
5.93
3.31
3.54
3.80
2.81
2.95
3.11
BHP
3 1/2” SP
2035
2106
2180
1854
1903
1966
1832
1833
1841
1854
1839
RPM
1396
1487
1583
1298
1329
1362
1218
1242
1269
1170
1181
1197
1175
1166
1165
5.46
6.96
8.76
4.02
4.46
4.94
2.92
3.25
3.61
2.13
2.36
2.62
1.63
1.77
1.94
1 1/2” SP
RPM
BHP
1766
1864
1503
1584
1672
1420
1446
1473
1362
1378
1398
1345
1345
1351
1351
11.89
14.46
6.26
7.83
9.69
4.75
5.21
5.72
3.61
3.95
4.33
2.80
3.03
3.30
2.60
2” SP
RPM
BHP
1847
1939
1608
1679
1759
1542
1561
1583
1506
1513
1525
1614
1506
1503
12.92
15.55
7.11
8.73
10.66
5.54
6.02
6.54
4.37
4.72
5.11
3.55
3.79
4.06
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 2.98
1926
2013
2105
1713
1774
1846
1662
1676
1693
1647
1647
1653
1661
1652
13.98
16.68
19.77
8.00
9.66
11.65
6.40
6.88
7.42
5.21
5.66
6.96
4.62
4.90
3” SP
RPM
BHP
2005
2087
2174
1817
1868
1931
1782
1790
1802
1785
1780
1779
15.06
17.82
20.98
8.94
10.64
12.68
7.31
7.81
8.35
6.11
6.47
6.87
3 1/2” SP
RPM
BHP
2084
2169
2242
1921
1961
2017
1901
1904
1911
1909
1903
16.18
19.00
22.22
9.93
11.67
13.74
8.30
8.79
9.34
7.45
7.85
4” SP
RPM
BHP
STD. BALANCE RPM: 2025
7.58
8.91
10.39
4.51
5.37
6.39
3.76
3.97
4.22
3.43
3.58
BHP
4” SP
STD. BALANCE RPM: 2025
SIZE 7/8 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
2.35
3.01
1.72
1.91
2.13
1.22
1.37
1.54
0.84
0.95
1.07
0.61
0.67
0.74
0.57
BHP
1 1/4” SP
WHEEL BLADE DIA. = 11 3/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 1.62
SIZE 7/8 — DF TYPE DFC UNITARY FAN — SINGLE FAN
8.59
10.02
11.61
5.46
6.29
7.35
4.80
4.98
5.20
2240
2304
2376
2128
2147
2186
2134
2128
2126
18.51
21.43
24.77
12.09
13.85
16.99
10.44
10.94
11.49
5” SP
RPM
BHP
2182
2249
2320
2048
2072
2120
2072
2057
2049
BHP
5” SP
RPM
9.64
11.13
12.81
6.59
7.34
8.37
6.36
BHP
2461
2512
2573
2426
2429
10.75
12.26
14.00
8.54
9.50
BHP
7” SP
RPM
2603
2640
2693
2611
2590
11.95
13.45
15.22
9.88
10.76
BHP
8” SP
RPM
2394
2447
2510
2331
2332
2355
2336
20.99
23.99
27.42
14.47
16.24
18.41
13.85
6” SP
RPM
BHP
2549
2590
2643
2516
2523
23.62
26.68
30.19
18.83
21.01
7” SP
RPM
BHP
2702
2695
2689
26.42
21.59
23.79
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 3450
2322
2383
2450
2252
2245
2273
2265
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 3450
19
810
972
1140
1300
1460
1620
1780
1950
2110
2270
2430
2590
2760
2920
3080
3240
3410
3570
3730
3890
4050
1500
1800
2100
2400
2700
3000
3300
3600
3900
4200
4500
4800
5100
5400
5700
6000
6300
6600
6900
7200
7500
723
763
618
651
686
564
571
590
0.77
0.94
0.40
0.50
0.62
0.20
0.25
0.31
BHP
1/2” SP
RPM
907
796
831
868
710
734
763
701
691
695
1.55
0.91
1.10
1.31
0.52
0.63
0.76
0.32
0.37
0.43
BHP
3/4” SP
RPM
1081
965
1002
1040
865
896
929
801
815
838
806
798
RPM
2.68
1.73
2.01
2.32
1.07
1.26
1.48
0.66
0.77
0.90
0.50
0.57
BHP
1” SP
1129
1168
1208
1021
1055
1091
932
958
988
892
896
910
898
RPM
810
972
1140
1300
1460
1620
1780
1950
2110
2270
2430
2590
2760
2920
3080
3240
3410
3570
3730
3890
4050
3000
3600
4200
4800
5400
6000
6600
7200
7800
8400
9000
9600
10200
10800
11400
12000
12600
13200
13800
14400
15000
765
813
639
677
719
581
591
610
1.72
2.13
0.86
1.09
1.38
0.43
0.54
0.68
1/2” SP
RPM
BHP
962
828
870
915
734
758
790
708
711
719
3.47
2.00
2.42
2.90
1.11
1.35
1.64
0.64
0.77
0.93
3/4” SP
RPM
BHP
1151
1011
1056
1103
894
929
968
829
843
865
818
821
6.04
3.81
4.46
5.20
2.30
2.73
3.23
1.41
1.65
1.94
1.02
1.20
1” SP
RPM
BHP
1191
1238
1287
1061
1102
1145
962
990
1023
919
928
942
915
6.44
7.38
8.43
4.17
4.84
5.59
2.65
3.08
3.58
1.72
1.98
2.28
1.49
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 13”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.70 SQ. FT.
1290
1176
1213
1251
1075
1107
1141
998
1020
1046
981
977
983
992
4.47
3.11
3.52
3.98
2.10
2.40
2.74
1.40
1.61
1.84
0.98
1.10
1.24
0.88
BHP
1 1/2” SP
RPM
1486
1526
1371
1409
1447
1268
1301
1336
1181
1207
1237
1131
1141
1158
1135
1129
RPM
6.82
7.54
4.99
5.55
6.16
3.57
4.00
4.47
2.51
2.83
3.18
1.80
2.00
2.24
1.48
1.63
BHP
2” SP
1557
1595
1450
1485
1520
1356
1386
1417
1285
1305
1329
1262
1262
1270
1269
RPM
7.41
8.15
5.52
6.10
6.73
4.05
4.49
4.98
2.96
3.28
3.64
2.24
2.44
2.68
2.06
BHP
2 1/2” SP
TIP SPEED = RPM x 3.41
1626
1662
1698
1527
1559
1592
1443
1469
1497
1389
1402
1420
1390
1383
1382
8.02
8.77
9.58
6.07
6.67
7.31
4.55
5.01
5.51
3.45
3.77
4.14
2.72
2.93
3.17
BHP
3” SP
RPM
1694
1727
1762
1602
1631
1662
1529
1550
1574
1493
1499
1511
1500
1494
RPM
8.63
9.41
10.23
6.63
7.25
7.91
5.09
5.56
6.07
3.99
4.31
4.68
3.45
3.70
BHP
3 1/2” SP
1760
1792
1825
1675
1702
1730
1614
1631
1651
1596
1596
1602
1602
RPM
1370
1231
1276
1322
1112
1149
1189
1032
1053
1080
1003
1008
1018
1001
10.05
6.86
7.82
8.88
4.55
5.23
6.00
3.02
3.45
3.96
2.05
2.33
2.65
1.80
1 1/2” SP
RPM
BHP
1577
1626
1438
1483
1530
1314
1353
1395
1220
1247
1279
1170
1181
1198
1158
1162
15.32
17.00
11.02
12.33
13.76
7.75
8.73
9.82
5.41
6.09
6.87
3.84
4.30
4.81
3.07
3.44
2” SP
RPM
BHP
1636
1682
1508
1549
1592
1401
1433
1469
1329
1348
1372
1298
1305
1315
1294
16.43
18.14
12.05
13.38
14.84
8.73
9.72
10.83
6.37
7.06
7.84
4.72
5.21
5.76
4.27
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 3.41
1697
1739
1784
1580
1616
1655
1490
1516
1546
1438
1451
1468
1418
1422
1428
17.58
19.33
21.21
13.14
14.49
15.97
9.80
10.80
11.91
7.41
8.12
8.91
5.63
6.18
6.77
3” SP
RPM
BHP
1758
1798
1839
1654
1686
1721
1581
1601
1626
1542
1552
1564
1532
1536
18.80
20.56
22.47
14.31
15.67
17.17
10.96
11.96
13.07
8.50
9.24
10.05
7.17
7.81
3 1/2” SP
RPM
BHP
1821
1857
1895
1730
1757
1787
1671
1687
1706
1642
1649
1658
1638
20.07
21.85
23.78
15.56
16.93
1843
12.18
13.20
14.32
9.62
10.41
11.26
8.89
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
9.27
10.06
10.90
7.23
7.85
8.53
5.67
6.13
6.65
4.56
4.88
5.25
4.27
BHP
4” SP
STD. BALANCE RPM: 1800
SIZE 1 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
2.89
3.29
3.74
1.91
2.20
2.53
1.23
1.43
1.65
0.81
0.92
1.06
0.72
BHP
1 1/4” SP
WHEEL BLADE DIA. = 13”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 1.85 SQ. FT.
SIZE 1 — DF TYPE DFC UNITARY FAN — SINGLE FAN
10.59
11.41
12.29
8.50
9.14
9.83
6.92
7.39
7.92
5.78
6.13
6.50
1951
1980
2011
1884
1903
1925
1846
1855
1868
1830
1833
1838
22.82
24.61
26.56
18.28
19.66
21.17
14.78
15.86
17.02
11.95
12.84
13.78
5” SP
RPM
BHP
11889
1917
1946
1821
1841
1864
1786
1793
1805
1797
1788
1784
BHP
5” SP
RPM
12.01
12.84
13.74
9.89
10.53
11.24
8.31
8.78
9.30
7.87
BHP
2143
2161
2182
2112
2118
2129
2122
2114
2111
13.52
14.37
15.28
11.40
12.04
12.75
9.78
10.28
10.81
BHP
7” SP
RPM
2270
2282
2298
2257
2257
2261
2261
15.15
15.99
16.91
13.01
13.66
14.37
12.42
BHP
8” SP
RPM
2084
2106
2132
2036
2049
2065
2011
2017
2025
2006
25.83
27.64
29.59
21.22
22.64
24.17
17.51
18.67
19.90
16.41
6” SP
RPM
BHP
2218
2235
2254
2183
2192
2204
2166
2170
2175
29.08
30.91
32.87
24.32
25.80
27.39
20.33
21.59
22.92
7” SP
RPM
BHP
2350
2362
2324
2330
2339
2319
32.51
34.38
27.52
29.09
30.75
26.02
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 2375
2017
2040
2065
1966
1980
1996
1956
1954
1958
1962
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 2375
20
801
916
1030
1150
1340
1530
1720
1910
2100
2290
2480
2670
2860
3050
3240
3440
3630
3820
4010
4200
2100
2400
2700
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
9500
10000
10500
11000
629
670
529
560
594
525
513
515
0.96
1.22
0.44
0.58
0.75
0.30
0.32
0.37
BHP
1/2” SP
RPM
810
700
734
770
627
639
667
664
653
636
2.14
1.17
1.44
1.76
0.61
0.75
0.94
0.47
0.52
0.56
BHP
3/4” SP
RPM
863
900
941
763
795
829
741
724
736
767
757
RPM
2.40
2.85
3.37
1.38
1.67
2.01
0.84
0.95
1.13
0.72
0.79
BHP
1” SP
1025
1067
916
951
987
824
851
883
847
821
809
857
RPM
801
916
1030
1150
1340
1530
1720
1910
2100
2290
2480
2670
2860
3050
3240
3440
3630
3820
4010
4200
4200
4800
5400
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
21000
22000
624
666
528
554
587
561
536
523
2.00
2.54
0.90
1.19
1.55
0.59
0.72
0.78
1/2” SP
RPM
BHP
805
692
726
764
652
641
662
696
695
677
4.45
2.40
2.98
3.65
1.34
1.55
1.92
1.10
1.21
1.29
3/4” SP
RPM
BHP
855
894
935
758
786
819
791
750
740
803
804
4.97
5.92
7.02
2.82
3.42
4.14
1.95
2.07
2.35
1.68
1.84
1” SP
RPM
BHP
1018
1061
906
941
978
828
846
873
899
873
834
888
8.89
10.33
5.50
6.50
7.62
3.31
3.90
4.64
2.55
2.77
2.93
2.36
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 14 5/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 5.24 SQ. FT.
1068
1106
1146
965
999
1033
888
906
933
938
918
892
4.60
5.29
6.06
2.96
3.45
4.00
1.84
2.14
2.52
1.34
1.50
1.63
BHP
1 1/2” SP
RPM
1259
1298
1339
1153
1187
1222
1057
1087
1120
1035
1024
1034
1082
1062
RPM
7.69
8.67
9.75
5.30
6.02
6.82
3.51
4.04
4.64
2.47
2.71
3.06
2.08
2.29
BHP
2” SP
1441
1482
1331
1366
1403
1230
1263
1297
1151
1171
1199
1186
1158
1145
1208
RPM
11.80
13.12
8.53
9.52
10.61
5.99
6.77
7.61
4.13
4.66
5.29
3.21
3.43
3.72
2.96
BHP
2 1/2” SP
TIP SPEED = RPM x 3.83
1503
1540
1400
1434
1468
1304
1334
1366
1254
1259
1277
1319
1295
1268
12.75
14.07
9.36
10.41
11.53
6.68
7.50
8.39
4.87
5.35
5.96
3.97
4.26
4.52
BHP
3” SP
RPM
1565
1600
1464
1497
1531
1377
1402
1432
1367
1354
1359
1419
1393
RPM
13.73
15.08
10.19
11.29
12.47
7.42
8.24
9.17
5.74
6.15
6.72
5.11
5.43
BHP
3 1/2” SP
1624
1658
1525
1557
1590
1454
1471
1496
1482
1458
1448
1510
RPM
1059
1098
1139
955
988
1022
909
908
927
985
97
942
9.54
11.01
12.64
6.05
7.07
8.24
3.93
4.43
5.16
3.13
3.”9
3.69
1 1/2” SP
RPM
BHP
1249
1289
1331
1140
1174
1211
1056
1079
1108
1098
1058
1045
1138
1131
15.99
18.05
20.34
10.88
12.61
14.11
7.23
8.27
9.49
5.64
5.88
6.41
4.67
5.35
2” SP
RPM
BHP
1431
1473
1317
1353
1391
1219
1249
1282
1169
1174
1192
1264
1230
1188
1273
24.58
27.36
17.58
19.71
22.04
12.24
13.84
15.62
8.71
9.64
10.63
7.50
7.86
8.14
6.92
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 3.83
1489
1527
1384
1417
1453
1299
1323
1352
1304
1282
1283
1394
1381
1346
26.41
29.24
19.18
21.40
23.80
13.72
15.33
17.16
10.68
11.33
12.37
9.29
9.94
10.35
3” SP
RPM
BHP
1548
1583
1449
1480
1513
1385
1399
1422
1448
1407
1385
1505
1487
28.27
31.18
20.82
23.10
25.58
15.41
16.95
18.76
13.08
13.48
14.23
11.93
12.64
3 1/2” SP
RPM
BHP
1605
1639
1515
1542
1573
1480
1480
1493
1582
1541
1500
605
30.15
33.13
22.54
24.84
27.38
17.43
18.78
20.51
15.60
16.05
16.54
14.86
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
14.71
16.11
11.01
12.15
13.39
8.23
9.03
9.97
6.72
7.08
7.57
6.36
BHP
4” SP
STD. BALANCE RPM: 1800
SIZE 1 1/8 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
4.27
4.95
2.68
3.15
3.67
1.59
1.90
2.27
1.09
1.21
1.36
1.01
BHP
1 1/4” SP
WHEEL BLADE DIA. = 14 5/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.62 SQ. FT.
SIZE 1 1/8 — DF TYPE DFC UNITARY FAN — SINGLE FAN
16.63
18.14
12.75
13.92
15.22
10.16
10.84
11.72
8.74
9.21
9.64
1717
1747
1656
1670
1691
1702
1668
1653
1798
1781
1746
33.99
37.09
26.46
28.64
31.17
22.67
23.43
24.69
20.43
21.47
22.16
5” SP
RPM
BHP
1733
1766
1647
1673
1702
1623
1619
1628
1695
1669
1641
BHP
5” SP
RPM
18.58
20.16
14.72
15.85
17.14
12.50
13.06
13.79
11.98
BHP
1943
1966
1918
1916
1925
1985
1957
1932
20.66
22.25
17.04
18.04
19.25
15.02
15.63
16.26
BHP
7” SP
RPM
2095
2053
2068
2069
2052
2047
22.97
24.49
19.73
20.58
21.66
19.02
BHP
8” SP
RPM
1833
1855
1817
1810
1817
1926
1883
1842
1957
38.19
41.26
31.43
33.19
35.47
28.90
29.54
30.25
27.96
6” SP
RPM
BHP
1957
1968
2004
1972
1957
2088
2047
43.03
45.90
37.77
38.90
40.66
36.23
37.03
7” SP
RPM
BHP
2095
2090
48.83
51.27
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 2115
1837
1867
1776
1790
1811
1807
1784
1773
1835
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 2115
21
798
972
1150
1320
1490
1670
1840
2010
2190
2360
2530
2710
2880
3060
3230
3400
3580
3750
3920
4100
4270
2300
2800
3300
3800
4300
4800
5300
5800
6300
6800
7300
7800
8300
8800
9300
9800
10300
10800
11300
11800
12300
590
495
525
556
440
444
467
1.30
0.64
0.83
1.05
0.29
0.37
0.49
BHP
1/2” SP
RPM
744
645
676
710
559
585
614
570
540
540
2.66
1.54
1.87
2.24
0.81
1.01
1.26
0.49
0.53
0.64
BHP
3/4” SP
RPM
788
821
856
695
725
756
623
642
667
648
622
RPM
2.97
3.47
4.04
1.77
2.13
2.52
0.98
1.20
1.46
0.77
0.83
BHP
1” SP
927
962
830
861
894
742
770
799
693
698
717
713
RPM
798
972
1150
1320
1490
1670
1840
2010
2190
2360
2530
2710
2880
3060
3230
3400
3580
3750
3920
4100
4270
4600
5600
6600
7600
8600
9600
10600
11600
12600
13600
14600
15600
16600
17600
18600
19600
20600
21600
22600
23600
24600
583
492
520
551
457
455
469
2.54
1.27
1.62
2.04
0.65
0.79
0.99
1/2” SP
RPM
BHP
735
639
670
702
566
585
610
567
560
557
5.19
3.01
3.64
4.36
1.66
2.02
2.47
1.00
1.18
1.39
3/4” SP
RPM
BHP
780
812
845
692
719
749
643
651
668
653
645
5.79
6.77
7.87
3.50
4.16
4.92
2.13
2.49
2.94
1.61
1.85
1” SP
RPM
BHP
917
951
822
853
885
744
767
794
720
719
727
728
9.83
11.24
6.39
7.41
8.55
4.03
4.70
5.49
2.66
3.02
3.47
2.35
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 16 1/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 5.76 SQ. FT.
963
996
1030
870
900
931
787
813
840
770
758
768
803
5.41
6.16
6.97
3.57
4.13
4.74
2.23
2.62
3.07
1.47
1.63
1.69
1.39
BHP
1 1/2” SP
RPM
1229
1126
1160
1194
1031
1062
1093
944
972
1001
880
895
918
928
894
877
RPM
12.08
8.75
9.77
10.88
6.16
6.95
7.81
4.16
4.76
5.43
2.73
3.13
3.61
2.13
2.24
2.42
BHP
2” SP
1282
1185
1216
1249
1094
1124
1154
1015
1039
1066
981
981
994
1034
1000
RPM
13.09
9.63
10.70
11.85
6.88
7.73
8.64
4.74
5.38
6.10
3.35
3.70
4.18
3.00
3.12
BHP
2 1/2” SP
TIP SPEED = RPM x 4.25
1333
1366
1399
1241
1271
1302
1154
1182
1211
1086
1105
1128
1093
1075
1074
1126
14.11
15.49
16.96
10.50
11.62
12.82
7.59
8.48
9.46
5.37
6.02
6.76
4.12
4.40
4.82
3.96
BHP
3” SP
RPM
1383
1415
1446
1294
1323
1353
1213
1238
1265
1160
1171
1190
1208
1177
1160
RPM
15.12
16.55
18.08
11.35
12.53
13.78
8.30
9.23
10.25
6.06
6.70
7.45
5.03
5.23
5.57
BHP
3 1/2” SP
1432
1462
1493
1345
1373
1402
1270
1293
1318
1240
1241
1252
1282
1253
RPM
953
986
1018
864
892
922
798
815
838
794
788
788
802
10.55
12.00
13.60
7.01
8.06
9.24
4.62
5.29
6.09
3.22
3.61
4.06
286
1 1/2” SP
RPM
BHP
1214
1115
1147
1180
1023
1052
1083
946
969
995
909
914
927
926
918
911
23.56
17.05
19.05
21.21
12.03
13.55
15.22
8.35
9.44
10.66
5.94
6.61
7.41
4.39
4.87
5.38
2” SP
RPM
BHP
1268
1174
1205
1236
1090
1116
1145
1029
1045
1066
1019
1016
1019
1035
1027
25.52
18.79
20.85
23.09
13.59
15.16
16.89
9.85
10.94
12.19
7.43
8.11
8.91
6.19
6.80
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 4.25
1321
1352
1384
1232
1260
1290
1157
1179
1205
1115
1123
1138
1124
1117
1113
1132
27.50
30.19
33.07
20.57
22.69
25.00
15.26
16.85
18.62
11.51
12.59
13.84
9.00
9.75
10.57
8.27
3” SP
RPM
BHP
1372
1402
1433
1288
1315
1343
1225
1243
1264
1202
1204
1212
1221
1213
1206
29.51
32.27
35.23
22.43
24.60
26.96
17.06
18.66
20.45
13.31
14.40
15.64
10.62
11.47
12.35
3 1/2” SP
RPM
BHP
1421
1450
1479
1345
1369
1394
1294
1307
1324
1288
1285
1287
1303
1295
31.58
34.39
37.41
24.38
26.58
28.98
18.99
20.59
22.39
15.23
16.34
17.58
13.23
14.21
4” SP
RPM
BHP
STD. BALANCE RPM: 1800
16.12
17.61
19.18
12.18
13.41
14.72
9.03
9.99
11.04
6.87
7.45
8.18
6.20
6.45
BHP
4” SP
STD. BALANCE RPM: 1800
SIZE 1 1/4 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
5.04
5.76
3.27
3.80
4.39
2.00
2.38
2.80
1.20
1.40
1.67
1.09
BHP
1 1/4” SP
WHEEL BLADE DIA. = 16 1/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 2.88 SQ. FT.
SIZE 1 1/4 — DF TYPE DFC UNITARY FAN — SINGLE FAN
18.07
19.66
21.35
13.86
15.16
16.57
10.65
11.59
12.67
8.84
9.25
9.86
1520
1544
1571
1460
1477
1497
1437
1440
1448
1452
1444
1438
35.93
38.81
41.93
28.61
30.83
33.26
23.24
24.83
26.62
19.25
20.50
21.81
5” SP
RPM
BHP
1523
1551
1581
1443
1468
1495
1390
1403
1421
1414
1392
1385
BHP
5” SP
RPM
19.99
21.67
23.46
15.63
16.96
18.41
12.57
13.41
14.44
11.52
11.94
BHP
1694
1718
1743
1644
1656
1673
1659
1643
1639
1688
21.95
23.69
25.55
17.58
18.88
20.34
14.90
15.57
16.47
14.45
BHP
7” SP
RPM
1780
1799
1821
1752
1754
1764
1778
1759
24.01
25.77
27.67
19.80
21.01
22.42
18.12
18.84
BHP
8” SP
RPM
1619
1639
1661
1579
1588
1602
1578
1574
1574
1593
1585
40.62
43.54
46.71
33.30
35.50
37.94
27.89
29.53
31.32
24.89
26.36
6” SP
RPM
BHP
1720
1734
1752
1700
1702
1709
1714
1706
1701
45.70
48.62
51.81
38.41
40.61
43.03
32.78
34.55
36.41
7” SP
RPM
BHP
1823
1832
1844
1820
1817
1818
1833
1626
51.18
54.09
57.26
43.86
46.10
48.53
39.77
41.77
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1906
1609
1636
1664
1542
1561
1584
1519
1518
1527
1558
1531
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1906
22
795
965
1140
1310
1480
1650
1820
1990
2160
2330
2500
2670
2840
3010
3180
3350
3520
3690
3860
4030
4200
2800
3400
4000
4600
5200
5800
6400
7000
7600
8200
8800
9400
10000
10600
11200
11800
12400
13000
13600
14200
14800
536
450
477
505
400
404
424
1.57
0.78
1.00
1.26
0.35
0.45
0.60
BHP
1/2” SP
RPM
675
585
614
644
508
532
558
518
491
491
3.20
1.86
2.24
2.69
0.98
1.23
1.52
0.59
0.65
0.78
BHP
3/4” SP
RPM
715
745
776
631
658
686
567
583
606
589
565
RPM
3.57
4.17
4.84
2.14
2.56
3.03
1.19
1.45
1.77
0.93
1.01
BHP
1” SP
841
872
753
781
811
674
699
726
630
635
652
648
RPM
795
965
1140
1310
1480
1650
1820
1990
2160
2330
2500
2670
2840
3010
3180
3350
3520
3690
3860
4030
4200
5600
6800
8000
9200
10400
11600
12800
14000
15200
16400
17600
18800
20000
21200
22400
23600
24800
26000
27200
28400
29600
530
447
473
500
415
414
426
3.06
1.54
1.95
2.46
0.79
0.96
1.21
1/2” SP
RPM
BHP
667
580
608
637
514
532
555
516
509
506
6.23
3.62
4.38
5.24
2.02
2.45
2.98
1.21
1.43
1.68
3/4” SP
RPM
BHP
708
737
767
628
653
680
584
592
607
594
587
6.95
8.12
9.44
4.22
5.00
5.91
2.58
3.01
3.56
1.95
2.24
1” SP
RPM
BHP
832
862
746
774
802
676
697
721
655
653
661
661
11.78
13.46
7.68
8.89
10.26
4.86
5.67
6.60
3.22
3.65
4.19
2.84
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 17 7/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 7.04 SQ. FT.
730
966
873
903
934
789
816
844
715
738
763
700
690
698
9.41
6.49
7.37
8.35
4.30
4.96
5.69
2.69
3.16
3.70
1.78
1.97
2.28
1.68
BHP
1 1/2” SP
RPM
1114
1021
1051
1082
935
963
992
857
882
908
800
814
834
813
797
RPM
14.43
10.47
11.69
13.00
7.39
8.33
9.36
5.00
5.72
6.52
3.29
3.77
4.34
2.71
2.93
BHP
2” SP
1162
1074
1103
1132
993
1020
1047
921
943
968
892
892
903
909
RPM
15.65
11.54
12.81
14.17
8.25
9.27
10.36
5.70
6.47
7.32
4.04
4.47
5.03
3.78
BHP
2 1/2” SP
TIP SPEED = RPM x 4.68
1209
1238
1268
1125
1153
1180
1048
1073
1099
986
1003
1024
994
977
976
16.88
18.52
20.27
12.58
13.92
15.35
9.10
10.18
11.34
6.46
7.24
8.12
4.98
5.31
5.81
BHP
3” SP
RPM
1254
1282
1311
1174
1200
1227
1101
1124
1148
1055
1064
1080
1099
1070
1055
RPM
18.10
19.80
21.61
13.60
15.00
16.50
9.96
11.08
12.29
7.31
8.06
8.95
6.09
6.32
6.72
BHP
3 1/2” SP
1298
1325
1353
1220
1245
1272
1154
1173
1196
1127
1128
1138
1167
1140
RPM
953
865
894
923
784
810
837
725
741
761
722
716
717
729
18.36
12.65
14.38
16.28
8.43
9.68
11.08
5.57
6.38
7.33
3.90
4.36
4.90
3.46
1 1/2” SP
RPM
BHP
1100
1011
1040
1069
928
954
982
859
879
903
826
831
842
835
828
28.15
20.41
22.79
25.36
14.43
16.24
18.24
10.05
11.34
12.80
7.17
7.97
8.93
5.89
6.50
2” SP
RPM
BHP
1149
1065
1092
1121
989
1013
1038
935
949
968
927
923
926
933
30.51
22.50
24.96
27.63
16.32
18.18
20.24
11.86
13.16
14.64
8.97
9.79
10.74
8.22
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 4.68
1197
1226
1254
1117
1143
1170
1050
1070
1093
1013
1021
1033
1022
1015
1012
32.90
36.09
39.52
24.65
27.18
29.93
18.34
20.23
22.34
13.87
15.16
16.65
10.87
11.77
12.75
3” SP
RPM
BHP
1244
1271
1298
1169
1193
1218
1113
1128
1147
1093
1094
1101
1110
1103
1096
35.33
38.60
42.12
26.90
29.48
32.29
20.51
22.42
24.55
16.05
17.34
18.82
12.83
13.85
14.91
3 1/2” SP
RPM
BHP
1289
1315
1341
1221
1242
1265
1176
1187
1202
1171
1168
1170
1185
1178
37.82
41.16
44.75
29.26
31.87
34.72
22.85
24.75
26.89
18.37
19.69
21.17
15.98
17.15
4” SP
RPM
BHP
STD. BALANCE RPM: 1700
19.30
21.07
22.94
14.60
16.07
17.63
10.85
11.99
13.24
8.28
8.97
9.84
7.50
7.80
BHP
4” SP
STD. BALANCE RPM: 1700
SIZE 1 3/8 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
6.04
6.90
3.93
4.56
5.26
2.41
2.86
3.37
1.45
1.69
2.02
1.32
BHP
1 1/4” SP
WHEEL BLADE DIA. = 17 7/8”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 3.52 SQ. FT.
SIZE 1 3/8 — DF TYPE DFC UNITARY FAN — SINGLE FAN
21.64
23.53
25.55
16.63
18.18
19.85
12.81
13.93
15.20
10.68
11.16
11.88
1379
1401
1425
1326
1341
1359
1306
1308
1315
1320
1313
1308
43.07
46.50
50.20
34.38
37.01
39.90
27.99
29.89
32.01
23.24
24.73
26.29
5” SP
RPM
BHP
1381
1407
1433
1310
1332
1356
1263
1274
1290
1286
1266
1259
BHP
5” SP
RPM
23.95
25.95
28.08
18.77
20.35
22.08
15.15
16.14
17.36
13.92
14.41
BHP
1538
1559
1582
1494
1504
1519
1510
1494
1490
26.31
28.38
30.60
21.14
22.67
24.41
17.99
18.77
19.82
BHP
7” SP
RPM
1616
1633
1653
1593
1594
1603
1618
1600
28.81
30.89
33.15
23.84
25.25
26.92
21.87
22.70
BHP
8” SP
RPM
1469
1487
1507
1435
1443
1455
1435
1431
1431
1448
1441
48.74
52.21
55.97
40.05
42.67
45.56
33.61
35.56
37.69
30.02
31.78
6” SP
RPM
BHP
1562
1575
1590
1545
1547
1553
1558
1552
1547
54.89
58.36
62.14
46.24
48.85
51.73
39.52
41.63
43.85
7” SP
RPM
BHP
1657
1664
1675
1655
1652
1653
1667
1660
61.53
64.97
68.74
52.82
55.49
58.37
47.93
50.32
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1731
1460
1484
1509
1400
1418
1438
1381
1380
1387
1418
1393
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1731
23
841
961
1080
1200
1320
1440
1560
1680
1800
1920
2040
2280
2520
2760
3000
3250
3490
3730
3970
4210
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9500
10500
11500
12500
13500
14500
15500
16500
17500
489
435
452
470
389
403
418
366
368
377
1.99
1.24
1.46
1.71
0.74
0.88
1.05
0.45
0.53
0.62
1/2” SP
RPM
BHP
534
551
588
486
501
517
452
461
473
456
449
448
2.30
2.63
3.40
1.52
1.75
2.01
0.99
1.14
1.32
0.69
0.77
0.87
3/4” SP
RPM
BHP
661
699
576
592
625
536
548
562
517
519
526
527
520
4.72
5.86
2.64
2.98
3.77
1.82
2.06
2.33
1.28
1.43
1.61
1.06
1.16
1” SP
RPM
BHP
695
730
768
617
631
662
584
593
604
582
578
579
588
841
961
1080
1200
1320
1440
1560
1680
1800
1920
2040
2280
2520
2760
3000
3250
3490
3730
3970
4210
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
19000
21000
23~00
25000
27000
29000
31000
33000
35000
523
456
477
500
402
417
435
376
382
390
4.65
2.84
3.37
3.98
1.65
1.98
2.37
0.99
1.17
1.39
BHP
1/2” SP
RPM
560
581
627
503
520
539
470
478
489
457
459
463
5.27
6.07
7.92
3.38
3.93
4.56
2.21
2.54
2.92
1.45
1.67
1.93
BHP
3/4” SP
RPM
702
748
597
616
657
555
566
581
533
538
546
523
529
RPM
10.97
13.70
5.92
6.73
8.66
4.05
4.58
5.20
2.83
3.19
3.60
2.21
2.50
BHP
1” SP
730
774
820
638
653
689
607
615
625
591
595
600
591
RPM
11.78
14.60
17.86
6.66
7.46
9.40
4.81
5.35
5.96
3.47
3.88
4.32
3.11
BHP
1 1/4” SP
WHEEL BLADE DIA. = 19 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 8.32 SQ. FT.
834
728
761
796
657
669
697
634
638
646
644
637
633
9.73
5.57
6.75
8.13
3.37
3.73
4.57
2.52
2.77
3.05
1.98
2.13
2.31
1 1/2” SP
RPM
BHP
886
922
959
791
821
853
736
744
765
734
731
732
747
740
10.77
12.65
14.77
6.48
7.71
9.13
4.20
4.57
5.44
3.35
3.59
3.88
2.94
3.14
2” SP
RPM
BHP
938
971
1005
852
878
907
817
819
831
830
824
819
11.88
13.80
15.97
7.46
8.72
10.19
5.14
5.50
6.39
4.28
4.53
4.81
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 5.10
1085
1120
988
1018
1051
912
933
959
899
896
899
911
904
19.70
22.47
13.04
15.00
17.21
8.51
9.80
11.31
6.18
6.54
7.42
5.56
5.85
3” SP
RPM
BHP
1127
1160
1036
1064
1095
973
988
1010
978
972
967
985
21.04
23.85
14.25
16.26
18.51
9.63
10.94
12.48
7.30
7.67
8.54
6.96
3 1/2” SP
RPM
BHP
1168
1200
1083
1109
1138
1035
1044
1060
1046
1036
889
758
799
843
680
692
721
656
663
671
647
648
651
22.68
12.61
15.48
18.84
7.50
8.29
10.21
5.60
6.18
6.80
4.15
4.58
5.07
BHP
1 1/2” SP
RPM
933
977
1022
818
851
890
764
772
791
749
752
758
747
747
RPM
24.77
29.32
34.44
14.43
17.32
20.77
9.38
10.20
12.08
7.24
7.90
8.62
6.10
6.64
BHP
2” SP
976
1017
1060
882
907
939
843
849
863
835
836
839
RPM
26.88
31.56
36.84
16.57
19.40
22.83
11.35
12.25
14.25
8.99
9.71
10.50
BHP
2 1/2” SP
TIP SPEED = RPM x 5.10
1141
1185
1022
1058
1098
947
966
991
917
921
932
915
915
45.29
52.01
29.15
33.86
39.24
18.97
21.78
25.13
13.38
14.37
16.54
11.62
12.47
BHP
3” SP
RPM
1176
1218
1070
1101
1137
1010
1026
1045
988
990
998
988
RPM
47.85
54.71
31.67
36.32
41.72
21.48
24.39
27.72
15.50
16.55
18.88
14.53
BHP
3 1/2” SP
1213
1252
1120
1146
1177
1070
1084
1100
1057
1061
RPM
50.51
57.44
34.44
39.02
44.37
24.05
27.12
30.53
18.82
21.28
BHP
4” SP
STD. BALANCE RPM: 1600
22.43
25.28
15.51
17.56
19.86
10.83
12.15
13.71
8.88
9.75
4” SP
RPM
BHP
STD. BALANCE RPM: 1600
SIZE 1 1/2 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
5.14
6.30
7.65
3.00
3.35
4.16
2.15
2.40
2.68
1.62
1.76
1.94
1.49
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 19 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 4.16 SQ. FT.
SIZE 1 1/2 — DF TYPE DFC UNITARY FAN — SINGLE FAN
25.33
28.27
18.19
20.30
22.68
13.49
14.79
16.35
12.41
1290
1322
1222
1240
1262
1185
1194
1206
1181
RPM
56.36
63.25
40.57
45.13
50.35
29.35
32.75
36.49
26.29
BHP
5” SP
1248
1277
1177
1197
1221
1159
1156
1162
1170
5” SP
RPM
BHP
28.40
31.42
21.11
23.24
25.67
16.42
17.73
19.27
1402
1424
1368
1373
1385
1381
1371
31.63
34.72
24.28
26.41
28.87
20.92
22.47
7” SP
RPM
BHP
1479
1496
1465
1462
1467
1474
35.06
38.19
27.72
29.82
32.27
25.91
8” SP
RPM
BHP
1371
1397
1319
1333
1351
1294
1298
1307
RPM
63.06
69.80
47.07
51.87
57.14
34.88
38.57
42.64
BHP
6” SP
1454
1474
1412
1423
1438
1398
1403
RPM
70.46
77.15
53.72
58.87
64.42
44.61
48.96
BHP
7” SP
1536
1552
1501
1510
1522
1495
RPM
78.25
85.08
60.53
66.02
71.92
55.48
BHP
8” SP
MAX. RPM WITH REINFORCMENT: 1650
1325
1351
1271
1284
1303
1280
1270
1266
6” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1650
24
790
966
1140
1320
1490
1670
1850
2020
2200
2370
2550
2720
2900
3080
3250
3430
3600
3780
3950
4130
4310
4500
5500
6500
7500
8500
9500
10500
11500
12500
13500
14500
15500
16500
17500
18500
19500
20500
21500
22500
23500
24500
410
346
365
387
314
316
328
2.49
1.21
1.55
1.97
0.58
0.72
0.93
BHP
1/2” SP
RPM
518
449
471
493
395
411
429
393
385
385
5.13
2.90
3.53
4.27
1.56
1.92
2.37
0.91
1.06
1.27
BHP
3/4” SP
RPM
548
571
595
487
506
527
445
454
469
451
444
RPM
5.64
6.65
7.79
3.35
4.00
4.76
1.95
2.33
2.79
1.46
1.67
BHP
1” SP
646
670
579
600
622
522
540
559
496
498
508
501
RPM
790
966
1140
1320
1490
1670
1850
2020
2200
2370
2550
2720
2900
3080
3250
3430
3600
3780
3950
4130
4310
9000
11000
13000
15000
17000
19000
21000
23000
25000
27000
29000
31000
33000
35000
37000
39000
41000
43000
45000
47000
49000
437
358
381
408
321
328
340
5.79
2.70
3.53
4.56
1.26
1.62
2.07
1/2” SP
RPM
BHP
554
469
496
525
410
425
445
392
393
400
11.99
6.61
8.15
9.94
3.47
4.27
5.31
1.87
2.30
2.83
3/4” SP
RPM
BHP
579
608
637
503
526
552
462
471
485
453
455
13.04
15.47
18.20
7.48
9.05
10.90
4.36
5.19
6.20
3.04
3.64
1” SP
RPM
BHP
688
717
605
631
659
540
558
580
510
517
527
506
22.56
26.06
14.08
16.59
19.41
8.50
10.04
11.90
5.29
6.20
7.25
4.50
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 22 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 11.38 SQ. FT.
671
694
717
608
628
649
558
572
589
546
543
547
554
10.32
11.81
13.45
6.76
7.81
8.99
4.34
5.03
5.83
2.91
3.28
3.75
2.60
BHP
1 1/2” SP
RPM
785
808
832
720
741
763
664
682
701
629
637
649
640
632
627
RPM
16.75
18.80
21.04
11.66
13.19
14.88
7.97
9.06
10.29
5.46
6.17
7.01
4.01
4.41
4.87
BHP
2” SP
827
849
871
768
787
807
719
733
750
701
702
708
715
706
RPM
18.30
20.39
22.68
13.09
14.66
16.39
9.27
10.40
11.67
6.73
7.44
8.29
5.66
6.15
BHP
2 1/2” SP
TIP SPEED = RPM x 5.95
931
953
975
868
888
909
813
830
849
774
784
798
773
768
768
781
26.92
29.66
32.62
19.93
22.06
24e39
14.59
16.20
17.98
10.68
11.83
13.13
8.15
8.85
9.69
7.55
BHP
3” SP
RPM
967
988
1009
908
927
946
858
873
890
830
836
845
842
834
829
RPM
28.75
31.53
34.53
21.63
23.81
26.18
16.16
17.81
19.63
12.21
13.36
14.68
9.67
10.39
11.22
BHP
3 1/2” SP
1002
1022
1043
947
964
983
903
915
930
886
887
893
898
890
RPM
708
737
766
631
655
681
578
592
609
555
560
568
555
23.84
27.43
31.39
15.18
17.72
20.60
9.65
11.17
13.00
6.25
7.25
8.37
5.40
1 1/2” SP
RPM
BHP
831
859
888
750
776
803
687
705
726
652
661
672
641
641
645
38.78
43.72
49.09
26.41
30.13
34.25
17.69
20.19
23.09
12.16
13.76
15.58
8.31
9.43
10.72
2” SP
RPM
BHP
866
892
920
794
816
840
746
759
775
720
727
735
716
717
41.79
46.88
52.43
29.21
32.94
37.14
20.65
23.09
25.93
14.77
16.55
18.49
11.77
13.18
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 5.95
979
1006
1035
901
926
952
841
858
879
804
814
826
785
789
795
784
61.9
68.5
75.7
44.9
50.0
55.7
32.3
36.0
40.2
23.8
26.3
29.1
17.4
19.4
21.5
15.7
3” SP
RPM
BHP
1009
1036
1063
939
961
984
889
903
920
859
867
877
847
848
853
65.4
72.1
79.5
48.2
53.4
59.1
35.9
39.5
43.6
27.1
29.8
32.7
20.3
22.3
24.6
3 1/2” SP
RPM
BHP
1041
1065
1091
978
997
1018
937
949
962
912
919
927
906
908
69.0
75.8
83.2
51.9
57.0
62.7
39.7
43.3
47.4
30.5
33.3
36.4
25.4
27.8
4” SP
RPM
BHP
STD. BALANCE RPM: 1400
30.64
33.46
36.51
23.39
25.61
28.02
17.82
19.50
21.35
13.85
15.00
16.32
12.03
12.88
BHP
4” SP
STD. BALANCE RPM: 1400
SIZE 1 3/4 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
9.69
11.15
6.19
7.21
8.38
3.83
4.50
5.29
2.40
2.78
3.25
2.12
BHP
1 1/4” SP
WHEEL BLADE DIA. = 22 3/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 5.69 SQ. FT.
SIZE 1 3/4 — DF TYPE DFC UNITARY FAN — SINGLE FAN
34.60
37.51
40.64
27.11
29.40
31.89
21.41
23.11
25.01
17.48
18.61
19.91
1106
1126
1148
1060
1073
1089
1030
1038
1048
1013
1017
1022
76.9
83.7
91.2
60.3
65.2
70.8
47.6
51.5
55.7
37.4
40.6
44.0
5” SP
RPM
BHP
1070
1089
1108
1023
1037
1053
993
1000
1010
998
993
991
BHP
5” SP
RPM
38.77
41.77
44.98
31.10
33.44
36.00
25.39
27.08
28.98
22.61
23.92
BHP
1202
1216
1231
1175
1182
1191
1178
1173
1172
1185
43.18
46.24
49.53
35.42
37.77
40.36
29.75
31.42
33.30
28.26
BHP
7” SP
RPM
1268
1279
1291
1253
1255
1260
1260
1255
47.84
50.93
54.28
40.06
42.40
44.99
36.10
37.97
BHP
8” SP
RPM
1176
1192
1209
1141
1151
1163
1117
1124
1132
1110
1112
86.1
92.7
100.0
69.4
74.5
80.0
55.8
60.1
64.6
48.2
51.9
6” SP
RPM
BHP
1247
1259
1273
1218
1227
1236
1201
1205
1211
1198
96.1
102.7
109.9
78.8
84.3
90.0
64.3
68.8
73.7
60.0
7” SP
RPM
BHP
1317
1327
1339
1293
1300
1308
1283
1287
106.7
113.5
120.7
88.5
94.3
100.3
77.9
83.0
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1450
1137
1153
1170
1098
1109
1122
1086
1086
1091
1096
1089
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1450
25
811
947
1080
1220
1350
1490
1620
1760
1890
2030
2170
2300
2440
2570
2710
2980
3250
3520
3790
4060
4330
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
17000
18000
19000
20000
22000
24000
26000
28000
30000
32000
334
350
367
290
304
318
267
270
278
2.39
2.86
3.39
1.33
1.63
1.98
0.73
0.87
1.08
BHP
1/2” SP
RPM
414
430
446
369
383
398
333
343
355
336
328
327
4.59
5.31
6.11
2.88
3.38
3.95
1.73
2.05
2.43
1.16
1.28
1.47
BHP
3/4” SP
RPM
489
505
522
442
457
473
401
414
428
377
382
391
388
379
RPM
7.70
8.71
9.82
5.20
5.95
6.79
3.38
3.92
4.52
2.19
2.51
2.91
1.79
1.95
BHP
1” SP
577
513
528
544
469
483
498
434
444
456
423
422
426
431
RPM
811
947
1080
1220
1350
1490
1620
1760
1890
2030
2170
2300
2440
2570
2710
2980
3250
3520
3790
4060
4330
12000
14000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
44000
48000
52000
56000
60000
64000
350
369
389
300
315
332
279
281
289
5.37
6.50
7.79
2.92
3.60
4.41
1.64
1.94
2.37
1/2” SP
RPM
BHP
434
453
473
382
398
416
347
355
368
346
342
342
10.35
12.07
14.00
6.33
7.50
8.83
3.82
4.50
5.34
2.58
2.88
3.28
3/4” SP
RPM
BHP
514
534
554
460
477
495
416
428
443
395
398
405
399
395
17.46
19.90
22.58
11.52
13.29
15.26
7.41
8.59
9.96
4.91
5.57
6.40
4.00
4.40
1” SP
RPM
BHP
612
535
554
573
486
501
518
450
460
472
442
441
444
445
30.31
18.83
21.31
24.05
12.77
14.57
16.59
8.62
9.80
11.19
6.18
6.82
7.62
5.66
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 26”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 14.78 SQ. FT.
598
631
536
551
566
495
508
522
466
474
484
470
463
462
14.09
17.20
9.16
10.24
11.42
4.44
7.26
8.17
4.48
5.05
5.70
3.38
3.64
4.01
BHP
1 1/2” SP
RPM
733
637
668
700
581
594
608
547
557
568
534
534
539
547
538
RPM
27.13
15.46
19.12
22.86
10.64
11.79
13.05
7.76
8.62
9.59
5.81
6.35
7.00
5.09
5.39
BHP
2” SP
765
674
703
733
624
635
647
599
605
614
604
598
596
614
RPM
29.36
17.65
21.06
24.95
12.18
13.39
14.70
9.23
10.10
11.08
7.41
7.88
8.49
7.06
BHP
2 1/2” SP
TIP SPEED = RPM x 6.81
796
827
860
710
737
766
667
676
686
653
655
660
662
656
31.61
36.74
42.47
19.47
23.02
27.05
13.81
15.05
16.41
10.89
11.73
12.70
9.68
10.21
BHP
3” SP
RPM
826
856
887
746
770
797
710
717
725
709
706
706
716
RPM
33.88
39.16
45.03
21.34
25.00
29.18
15.58
16.82
18.19
12.78
13.55
14.49
12.17
BHP
3 1/2” SP
855
884
914
781
803
828
755
758
764
765
758
754
RPM
629
668
557
574
592
513
526
541
486
492
501
487
484
483
31.92
39.44
20.26
22.78
25.56
14.12
15.94
17.98
9.97
11.14
12.52
7.58
8.22
9.00
1 1/2” SP
RPM
BHP
778
664
700
738
601
615
630
568
577
588
558
559
562
564
560
62.29
35.29
42.99
51.96
23.34
25.92
28.77
17.13
18.95
21.02
13.09
14.21
15.55
11.38
12.16
2” SP
RPM
BHP
804
699
732
767
646
657
670
626
630
637
627
625
624
631
66.40
38.88
46.73
55.88
26.76
29.36
32.24
20.61
22.39
24.43
16.69
7.78
19.08
15.74
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 6.81
831
868
907
735
764
796
693
701
711
683
684
688
487
689
70.6
82.8
96.5
42.7
50.6
59.9
30.5
33.1
36.0
24.5
26.2
28.2
21.7
23.0
3” SP
RPM
BHP
859
894
930
772
797
826
741
746
753
740
738
739
743
75.0
87.4
101.3
46.8
54.8
64.2
34.7
37.2
40.1
28.8
30.5
32.4
27.3
3 1/2” SP
RPM
BHP
887
919
954
810
831
857
790
792
796
794
791
789
79.6
92.1
106.2
51.2
59.2
68.7
39.2
41.7
44.5
33.4
35.1
37.0
4” SP
RPM
BHP
STD. BALANCE RPM: 1000
36.17
41.59
47.61
23.28
27.03
31.32
17.50
18.71
20.09
14.89
15.59
16.46
BHP
4” SP
STD. BALANCE RPM: 1000
SIZE 2 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
13.21
8.43
9.44
10.62
5.81
6.60
7.47
3.91
4.47
5.10
2.74
3.04
3.43
2.53
BHP
1 1/4” SP
WHEEL BLADE DIA. = 26”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 7.39 SQ. FT.
SIZE 2 — DF TYPE DFC UNITARY FAN — SINGLE FAN
40.81
46.50
52.81
27.43
31.2
35.73
21.9
22.9
24.2
20.9
944
972
1002
888
901
920
884
882
883
887
89.4
102.1
116.5
60.9
68.9
78.4
47.4
51.8
54.5
47.2
5” SP
RPM
BHP
912
938
966
852
867
888
847
844
844
853
BHP
5” SP
RPM
45.61
51.51
58.08
32.07
35.85
40.38
27.98
29.13
BHP
1011
1023
1042
1065
999
999
1008
50.64
56.69
63.46
37.31
40.89
45.36
34.65
BHP
7” SP
RPM
1078
1094
1114
1076
1067
1069
55.99
62.09
69.00
43.16
46.47
50.76
BHP
8” SP
RPM
1002
1025
1052
967
972
985
970
968
100.1
112.9
127.4
72.0
79.7
89.1
63.0
65.7
6” SP
RPM
BHP
1063
1080
1102
1345
1045
1051
1050
111.8
124.5
139.1
84.1
91.7
100.8
77.9
7” SP
RPM
BHP
1124
1137
1154
1120
1116
1117
124.4
137.0
151.6
97.2
104.7
113.7
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1189
968
991
1016
924
932
948
932
926
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1189
26
855
962
1070
1180
1280
1390
1500
1600
1710
1930
2140
2350
2570
2780
2990
3210
3420
3640
3850
4060
4280
8000
9000
10000
11000
12000
13000
14000
15000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
38000
40000
329
284
295
306
255
264
273
237
240
247
4.45
2.54
2.94
3.40
1.58
1.86
2.18
0.97
1.13
1.34
BHP
1/2” SP
RPM
357
379
403
316
326
336
294
300
308
296
291
291
5.17
6.53
8.14
3.11
3.55
4.04
2.07
2.37
2.72
1.51
1.64
1.83
BHP
3/4” SP
RPM
448
383
404
425
348
355
364
335
337
341
343
337
RPM
10.98
5.90
7.34
9.02
3.72
4.18
4.70
2e66
2.95
3.31
2.29
2.44
BHP
1” SP
469
492
515
408
427
447
379
384
391
378
375
376
385
RPM
855
962
1070
1180
1280
1390
1500
1600
1710
1930
2140
2350
2570
2780
2990
3210
3420
3640
3850
4060
4280
16000
18000
20000
22000
24000
26000
28000
30000
32000
36000
40000
44000
48000
52000
56000
60000
64000
68000
72000
76000
80000
350
296
309
322
263
273
284
248
250
256
10.2
5.6
6.6
7.6
3.4
4.0
4.8
2.1
2.5
2.9
1/2” SP
RPM
BHP
373
400
428
327
338
349
307
312
319
306
304
304
11.5
14.8
18.7
6.8
7.8
8.9
4.6
5.2
5.9
3.3
3.6
4.1
3/4” SP
RPM
BHP
474
397
421
447
361
368
377
351
352
355
354
352
25.0
13.0
16.3
20.3
8.1
9.1
10.3
5.9
6.5
7.3
5.1
5.5
1” SP
RPM
BHP
492
518
546
422
443
466
395
399
405
394
392
393
396
26.8
32.4
38.9
14.5
17.9
22.0
9.7
10.7
11.8
7.6
8.1
8.8
7.1
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 29 1/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 18.70 SQ. FT.
556
489
511
533
432
449
469
411
414
418
421
414
411
21.15
12.91
15.32
18.06
7.41
8.97
10.80
5.11
5.57
6.12
4.19
4.42
4.72
BHP
1 1/2” SP
RPM
658
589
612
635
527
547
568
481
493
509
478
475
474
484
RPM
35.63
23.55
27.16
31.18
14.87
17.43
20.31
9.06
10.69
12.63
6.86
7.26
7.77
6.54
BHP
2” SP
686
621
642
664
564
582
601
530
537
549
545
538
533
RPM
38.49
25.98
29.74
33.90
16.88
19.57
22.59
10.94
12.55
14.54
8.96
9.31
9.74
BHP
2 1/2” SP
TIP SPEED = RPM x 7.66
714
736
758
652
671
692
600
616
633
582
581
588
592
41.39
46.58
52.25
28.43
32.34
36.65
18.99
21.76
24.91
13.10
14.62
16.60
12.04
BHP
3” SP
RPM
740
761
783
681
700
720
637
649
664
635
627
629
RPM
44.30
49.64
55.46
30.92
34.96
39.41
21.22
24.04
27.28
15.56
16.94
18.84
BHP
3 1/2” SP
766
786
807
711
728
746
674
683
695
675
670
RPM
589
509
535
561
448
465
486
430
432
435
434
431
430
48.4
28.7
34.4
40.9
16.2
19.6
23.8
11.4
12.4
13.5
9.3
9.9
10.6
1 1/2” SP
RPM
BHP
699
617
644
671
546
568
592
501
511
527
496
496
496
500
81.9
52.8
61.5
71.1
32.6
38.5
45.2
20.1
23.5
27.6
15.4
16.3
17.4
14.6
2” SP
RPM
BHP
723
646
670
696
584
602
623
555
559
569
561
558
556
87.2
57.5
66.3
76.2
37.0
42.9
49.7
24.5
27.8
32.0
19.9
20.9
21.9
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 7.66
746
772
799
675
697
721
623
637
655
608
608
613
612
92.6
105.0
118.6
62.5
71.4
81.5
41.8
47.7
54.6
29.5
32.7
36.8
27.0
3” SP
RPM
BHP
770
795
820
705
725
747
663
673
688
660
656
657
98.3
110.8
124.6
67.8
76.8
87.0
47.0
52.9
59.8
35.0
38.2
42.1
3 1/2” SP
RPM
BHP
794
818
842
736
753
773
704
710
721
703
701
104.1
116.8
130.8
73.3
82.4
92.7
52.7
58.5
65.4
44.0
47.9
4” SP
RPM
BHP
STD. BALANCE RPM: 900
47.23
52.72
58.69
33.46
37.62
42.20
23.62
26.44
29.73
19.54
21e31
BHP
4” SP
STD. BALANCE RPM: 900
SIZE 2 1/4 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
11.94
14.28
16.94
6.65
8.15
9.91
4.37
4.85
5.39
3.37
3.63
3.97
3.18
BHP
1 1/4” SP
WHEEL BLADE DIA. = 29 1/4”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 9.35 SQ. FT.
SIZE 2 1/4 — DF TYPE DFC UNITARY FAN — SINGLE FAN
756
26.98
53.18
58.94
65.20
38.79
43.11
47.90
29.04
31.72
34.99
844
864
885
799
811
826
784
785
790
787
116.6
129.5
143.7
85.6
94.7
105.0
65.4
71.0
77.7
60.8
5” SP
RPM
BHP
816
834
854
769
782
798
750
751
758
BHP
5” SP
RPM
59.31
65.29
71.80
44.60
48.94
53.86
35.36
37.77
40.86
BHP
913
927
943
887
892
901
894
888
65.71
71.84
78.55
51.01
55.26
60.18
44.65
47.46
BHP
7” SP
RPM
961
973
986
949
949
953
955
72.49
78.69
85.52
58.11
62.16
66.97
54.85
BHP
8” SP
RPM
895
912
930
863
871
881
863
859
860
130.1
143.1
157.5
99.3
108.2
118.5
79.6
85.1
91.6
6” SP
RPM
BHP
948
961
976
928
931
938
931
928
144.8
157.8
172.2
114.5
123.2
133.3
100.6
107.0
7” SP
RPM
BHP
1001
1011
1023
993
992
995
995
160.8
173.6
188.0
131.0
139.6
149.4
123.6
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 1057
864
881
899
827
837
850
828
822
822
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 1057
27
868
954
1040
1130
1220
1300
1390
1560
1740
1910
2080
2260
2430
2600
2780
2950
3120
3300
3470
3650
3820
10000
11000
12000
13000
14000
15000
16000
18000
20000
22000
24000
26000
28000
30000
32000
34000
36000
36000
40000
42000
44000
294
246
261
277
226
232
239
214
216
220
5.37
2.67
3.42
4.31
1.80
2.06
2.35
1.22
1.38
1.57
BHP
1/2” SP
RPM
319
336
352
277
290
304
263
266
271
266
262
261
6.25
7.56
9.08
3.34
4.15
5.12
2.41
2.68
2.99
1.87
2.00
2.18
BHP
3/4” SP
RPM
390
407
343
358
374
307
317
329
302
302
304
310
305
RPM
11.92
13.95
7.14
8.53
10.12
4.01
4.91
5. 94
3.15
3.40
3.71
2.81
2.95
BHP
1” SP
459
409
425
442
366
379
394
338
344
353
343
339
337
348
RPM
868
954
1040
1130
1220
1300
1390
156O
1740
1910
2060
2260
2430
2600
2780
2950
3120
3300
3470
3650
3820
20000
22000
24000
26000
28000
30000
32000
36000
40000
44000
48000
52000
56000
60000
64000
66000
72000
76000
80000
84000
68000
312
255
273
292
234
240
247
223
225
228
12.3
5.9
7.6
9.7
3.9
4.5
5.1
2.7
3.0
3.4
1/2” SP
RPM
BHP
334
353
373
286
300
316
275
277
281
275
274
273
13.9
17.1
20.7
7.3
9.1
11.3
5.3
5.9
6.5
4.2
4.5
4.9
3/4” SP
RPM
BHP
410
430
356
373
391
319
328
341
316
316
317
319
317
27.0
31.9
15.7
18.9
22.7
9.0
10.7
13.0
7.1
7.6
6.2
6.2
6.6
1” SP
RPM
BHP
486
427
446
466
376
393
409
353
358
366
355
354
353
357
46.0
29.1
34.1
39.7
17.6
20.9
24.7
10.9
12.6
14.9
9.0
9.6
10.2
8.6
1 1/4” SP
RPM
BHP
WHEEL BLADE DIA. = 33 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 23.04 SQ. FT.
475
492
509
428
443
459
388
400
413
370
371
378
382
376
372
21.46
24.45
27.72
14.18
16.31
18.71
9.00
10.51
12.23
5.81
6.63
7.71
5.07
5.26
5.51
BHP
1 1/2” SP
RPM
555
571
589
507
522
538
464
477
492
432
440
451
436
428
427
RPM
34.49
38.55
42.96
24.22
27.34
30.76
16.49
18.81
21.38
11.0
12.60
14.42
8.01
8.74
9.73
BHP
2” SP
582
598
614
537
551
566
498
510
523
477
481
488
486
479
RPM
37.70
41.91
46.46
26.91
30.21
33.82
18.81
21.31
24.01
13.35
14.81
16.74
11.30
12.15
BHP
2 1/2” SP
TIP SPEED = RPM x 8.50
608
623
639
566
579
593
533
542
553
524
523
526
531
40.95
45.30
50.00
29.82
33.21
36.92
21.44
23.92
26.72
16.03
17.46
19.28
14.98
BHP
3” SP
RPM
633
648
663
595
607
620
568
575
584
572
566
565
RPM
44.22
48.72
53.57
32.71
36.22
40.05
24.19
26.69
29.53
19.09
20.38
22.08
BHP
3 1/2” SP
658
672
686
623
634
645
604
607
614
610
604
RPM
500
519
540
444
462
480
402
414
428
387
388
393
392
390
386
48.5
55.7
63.6
31.3
36.4
42.1
19.7
23.0
26.9
13.1
14.8
17.0
11.2
11.8
12.4
1 1/2” SP
RPM
BHP
584
604
625
528
546
565
460
494
5lO
450
457
467
450
447
447
78.2
88.0
98.7
53.8
61.1
69.2
36.1
41.3
47.2
24.4
27.7
31.6
18.0
19.7
21.8
2” SP
RPM
BHP
618
627
646
556
572
590
516
528
541
499
502
508
503
500
84.2
94.2
105.1
59.4
66.8
75.1
41.5
46.7
52.7
29.9
33.1
36.9
25.3
27.4
2 1/2” SP
RPM
BHP
TIP SPEED = RPM x 8.50
632
649
667
586
600
615
554
562
573
548
547
549
551
90.6
100.7
111.8
65.3
72.9
81.3
47.4
52.6
58.6
36.1
39.2
42.9
33.6
3” SP
RPM
BHP
656
672
689
616
628
641
593
598
606
594
591
591
97.2
107.5
118.7
71.8
79.4
87.9
53.9
59.0
65.0
42.9
45.9
49.6
3 1/2” SP
RPM
BHP
681
696
711
647
656
668
632
634
639
634
632
104.2
114.6
125.9
78.6
86.3
94.8
61.0
66.1
71.9
53.2
56.8
4” SP
RPM
BHP
STD. BALANCE RPM: 800
47.53
52.16
57.16
35.72
39.31
43.25
27.20
29.65
32.50
23.63
25.19
BHP
4” SP
STD. BALANCE RPM: 800
SIZE 2 1/2 — DF TYPE DFC DUPLEX FAN — DOUBLE FAN
20.12
13.04
15.15
17.50
8.06
9.51
11.17
4.88
5.73
6.79
4.04
4.26
4.54
3.88
BHP
1 1/4” SP
WHEEL BLADE DIA. = 33 1/2”
(ALL CAPACITIES BASED ON STANDARD AIR (DENSITY .075# / CU. FT. – 70˚F. – 29.29” HG. BAR.)
Outlet
Velocity
FMP
Volume
of Air
CFM
OUTLET AREA = 11.52 SQ. FT.
SIZE 2 1/2 — DF TYPE DFC UNITARY FAN — SINGLE FAN
54.35
59.20
64.44
42.21
45.84
49.90
34.09
36.30
39.02
32.36
732
744
757
710
715
723
707
706
707
710
119.3
129.8
141.3
93.9
101.4
109.9
76.9
81.7
67.4
72.7
5” SP
RPM
BHP
707
719
731
680
687
696
678
675
676
685
BHP
5” SP
RPM
61.58
66.55
71.96
49.4,9
53.02
57.07
44.05
46.50
BHP
804
811
819
800
798
800
805
69.37
74.31
79.84
57.72
61.02
64.92
55.01
BHP
7” SP
RPM
854
858
864
862
856
853
77.85
82.74
88.20
66.92
69.93
73.58
BHP
8” SP
RPM
785
793
803
773
775
779
776
774
136.1
146.5
158.0
111.2
118.4
126.7
99.3
104.8
6” SP
RPM
BHP
839
844
851
836
835
836
838
154.5
164.7
176.1
130.2
137.3
145.4
123.9
7” SP
RPM
BHP
893
896
900
897
894
893
174.6
184.6
195.8
150.7
157.8
165.7
8” SP
RPM
BHP
MAX. RPM WITH REINFORCMENT: 953
755
765
775
739
742
748
744
740
RPM
6” SP
MAX. RPM WITH REINFORCMENT: 953
INSTALLATION SUGGESTIONS
FOUNDATIONS:
Unit foundations and bearing supports must be designed
for live load with horizontal as well as vertical stiffness.
Bearing supports must be flat and level for proper bearing
operation and rated life.
DF - DFB - DFC FAN ASSEMBLY:
1. Install fan housings. Housings are frequently supported
from outlets and/or sides with additional support at rear of
housings on larger sizes.
2. Insert wheels in housings. Wheels are inserted through
outlets after removal of cut-off plates. These centrifugal forward curved wheels must be inserted so that cup of blade
faces the outlet.
3. Insert shaft in position. Slide the shaft through the shaft
hole in unit casing and through the wheel hubs. Slide keys
into wheel hubs before this operation is completed. Loosely
mount cooling wheels, if used, on shaft between the casing
and the bearings so that the cooling wheel blades face away
from casing toward end of shaft.
4. Mount bearings (see bearing installation). Slide the drive
side bearing (“Held”, “Fixed” or “Retained” bearing) onto shaft
and loosely bolt in position. Also slide the opposite side bearing (“Free” or “Floating” bearing) onto shaft and loosely bolt
into position. Position the shaft in bearings so that 1/4” of shaft
extends out of the opposite side bearing. Align the bearing
housings with the shaft so that the shaft is centered in seals of
bearings and the seals of bearings rotate freely. Tighten the
bearing housing hold-down bolts. Lock inner race of drive side
bearing to shaft.
5. Complete fan wheel installation. Position wheels in
center of their housings for low or normal temperature units.
For high temperature units, position wheels toward drive side
of housing, allowing only running clearance. Always tighten
the wheel hub set screw over the keyway first and then the
other set screw second. Replace cutoff plates previously
removed.
6. Complete bearing installation. Position balls and races
of opposite side (floating) bearing in the center of float space
for normal temperature units. For high temperature units position balls and races toward unit side of float space leaving
very small end clearance in order to allow nearly full float for
shaft expansion. Lock inner race of floating bearing to shaft.
Fill grease lubricated bearing housings 1/3 full of lubricant
shown below and replace end bell or top half of bearing.
Check alignment of both bearings with shaft, repositioning
bearing as required. If cooling wheels are used, position cooling wheels as shown in illustration on page 5, bolt wheel
halves securely together and complete cooling assemblies.
Rotate shaft to make sure fans run free and clear. Install and
align the drive.
7. Initial operation. Apply power momentarily. Check for
proper direction of fan rotation. Check drive for smooth operation. After 50 hours of operation, re-tighten wheel hub set
screws and bearing hold down bolts.
BEARING INSTALLATION:
The following are general bearing installation suggestions.
Always consult the bearing manufacturer for specific bearing
installation instructions.
28
Standard Cast Iron Pillowblock Bearings. To install the unit
on the shaft, make certain that shafting is free of burrs.
Setscrews should be clear of bore. Slide the bearing into position on the shaft. Never hammer the end of the inner race
since they are relatively soft. If necessary to apply force, use a
brass or copper pipe or bar against the inner race to drift the
bearing into place. Bolt bearing housing to support. Rotate
shaft to make certain it turns freely. Then tighten the setscrews
securely onto the shaft. Consult the bearing manufacturer for
setscrew torque tightening values.
Taper Roller Bearings. Expansion and Non-Expansion
Bearings. One non-expansion bearing must be installed on
every shaft to stabilize the shaft. Slide the bearing unit and
locking collar on the shaft. DO NOT hammer the ends of the
bearing. If the fit is snug, use a piece of emery cloth to smooth
rough spots on shaft. Mount the housing securely to the bearing supports. Secure the first bearing to the shaft by first tightening all setscrews to one half of the tightening torque recommended by the manufacturer. Then, alternately tighten the
setscrews to the torque value recommended by the manufacturer. Check for freedom of rotation. Repeat procedure for
remaining bearings on shaft.
Caution: Dirt is a major cause of premature bearing failure. Extreme care should be taken during installation and
lubrication to prevent entrance of dirt.
LUBRICATION:
Use a clean lithium base grease conforming to a NLGI
grade #2 consistency. Add lubricant semi-annually for dirty
atmospheres or high temperature installations and annually for
clean normal conditions. This type of lubricant is satisfactory
for an operating temperature range of -30˚ F to +250˚ F.
DRIVES:
Improperly installed V-belt drives cause vibration and
excessive drive wear. Installation practices should be observed
as follows:
1. Fan and motor shafts must be parallel.
2. Fan and motor sheaves must be aligned axially.
3. Belts must have proper tension, neither too tight or too
loose.
4. Fan sheaves for belt speeds over 5000 ft./ min. should be
specially balanced.
5. When installing bushed sheaves, locking bolts must be
tightened uniformly to avoid sheave eccentricity.
6. Always tighten setscrew over keyway first.
AFTER RUN:
On high temperature installations (over 300˚ F.) fans
should be operated after heater shut-off until cool to prevent
shaft bending because of creep during high temperature soaking.
DIRECT FIRED HEATERS:
Provision must be made for adequate mixing of heater output with the circulated air to furnish uniform fan inlet temperature. Stratification and local spots cause uneven fan wheel
expansion and subsequent distortion.
High temperature limit controls should be located in fan
inlet air stream.
DF - DFB - DFC FAN DIMENSIONS
DF WHEELS
DFB HOUSINGS
FAN
SIZE
L
M
N
O
P
WHEEL
WEIGHTS
LESS HUB
Lbs.
¹⁄₂
⁵⁄₈
9”
6¹⁵⁄₆₄
7⁴⁷⁄₆₄
9¹⁵⁄₁₆
6³⁄₄
8¹⁄₄
9¹⁄₄
5⁵⁄₈
7¹⁄₁₆
7³⁄₄
6¹⁄₂
8¹⁄₈
9
3
3³⁄₄
4¹⁄₂
3
5.5
8
³⁄₄
⁷⁄₈
1
9¹⁵⁄₁₆
12¹⁵⁄₆₄
12¹⁵⁄₆₄
10
11⁵⁄₈
13¹⁄₄
8¹⁄₂
9⁵⁄₈
11¹⁄₄
9³⁄₄
11³⁄₈
13
4¹⁄₂
6
6
8.5
14
15
1¹⁄₈
1¹⁄₄
1³⁄₈
15¹⁵⁄₆₄
15¹⁵⁄₆₄
16²⁵⁄₃₂
15
16⁵⁄₈
18¹⁄₈
12¹⁄₂
14¹⁄₄
15¹⁄₂
14⁵⁄₈
16¹⁄₄
17⁷⁄₈
7¹⁄₂
7¹⁄₂
8¹⁄₄
21
22
28.5
1¹⁄₂
1³⁄₄
2
18⁹⁄₃₂
21⁹⁄₃₂
24⁷⁄₁₆
19⁷⁄₈
23³⁄₈
26¹⁄₂
17¹⁄₈
20
22⁷⁄₈
19¹⁄₂
22³⁄₄
26
9
10¹⁄₂
12
38
51
83
2¹⁄₄
2¹⁄₂
27¹³⁄₃₂
30¹¹⁄₃₂
30
33¹⁄₄
25³⁄₄
28⁵⁄₈
29¹⁄₄
32¹⁄₄
13¹⁄₂
15
115
170.5
FAN
SIZE
A
B
D
E*
F*
H
J
K
WEIGHT
Lbs.
¹⁄₂
⁵⁄₈
³⁄₄
11⁹⁄₁₆
14¹⁄₁₆
16⁷⁄₈
11¹⁄₄
13¹⁄₂
15⁵⁄₈
4⁷⁄₁₆
5⁷⁄₁₆
5⁷⁄₈
7¹⁄₂
9
10⁵⁄₈
7¹⁄₈
8⁵⁄₈
12³⁄₈
4⁷⁄₈
6
7³⁄₁₆
1¹⁄₄
1¹⁄₄
1⁹⁄₁₆
⁷⁄₁₆
⁹⁄₁₆
2¹¹⁄₁₆
6.25
9.25
13.5
⁷⁄₈
1
1¹⁄₈
19⁵⁄₈
22¹⁄₂
25⁵⁄₁₆
18
20¹⁄₂
22¹³⁄₁₆
6³⁄₄
7¹³⁄₁₆
8¹¹⁄₁₆
13³⁄₄
13³⁄₄
17¹⁄₂
14⁷⁄₁₆
16⁷⁄₁₆
18⁵⁄₈
8³⁄₈
9⁵⁄₈
10¹³⁄₁₆
1¹¹⁄₁₆
1¹¹⁄₁₆
1¹³⁄₁₆
3³⁄₁₆
3⁹⁄₁₆
4¹⁄₈
18
21
30
1¹⁄₄
1³⁄₈
1¹⁄₂
28
30⁵⁄₁₆
33
25¹⁄₄
26¹¹⁄₁₆
28¹⁵⁄₁₆
9¹¹⁄₁₆ 17¹⁄₂
9⁷⁄₈
19¹⁄₂
10¹³⁄₁₆ 21
20¹⁄₂
22⁵⁄₈
24⁵⁄₈
12
12³⁄₄
13⁷⁄₈
1¹³⁄₁₆
1⁷⁄₈
1⁷⁄₈
4¹⁄₂
5¹⁄₁₆
5¹⁄₂
32.75
37
46
1³⁄₄
2
38³⁄₈
33¹⁄₂
45¹⁵⁄₁₆ 40⁷⁄₈
12⁷⁄₁₆
16¹⁄₄
28³⁄₄
32³⁄₄
16¹⁄₁₆
19¹³⁄₁₆
2³⁄₁₆
2
6⁷⁄₁₆
7⁵⁄₁₆
63
105
24¹⁄₄
27⁵⁄₈
* OUTLET DIMENSIONS — OUTSIDE
STANDARD HUBS— TYPE DF WHEELS
DF
WHEEL
SIZE
HUB
SIZE
BORE RANGE
MIN
MAX
R
S
T
WEIGHT
Lbs.
M-1283
M-1375
M-975
M-1014
¹⁄₄
¹¹⁄₁₆
1¹¹⁄₁₆
1¹⁄₂
⁵⁄₈
1
1⁷⁄₁₆
2
1⁷⁄₈
1⁷⁄₈
2³⁄₈
3³⁄₄
1¹⁄₄
1¹⁄₄
1¹⁄₄
2
—
—
—
—
1
1
2.25
4.5
³⁄₄, ⁷⁄₈, 1”,
9”
M-799
M-1014
⁵⁄₈
1¹⁄₄
1³⁄₁₆
2⁷⁄₁₆
2¹⁄₄
3³⁄₄
2
2
—
—
3
4.5
1¹⁄₈, 1¹⁄₄”,
1³⁄₈
M-739
M-1802
M-1421
M-1812-S
³⁄₄
1¹¹⁄₁₆
2³⁄₄
3¹⁄₂
1⁵⁄₈
2¹¹⁄₁₆
3⁷⁄₁₆
5¹⁄₈
2³⁄₄
4¹⁄₈
5¹⁄₈
5³⁄₄
3¹⁄₈
3¹⁄₈
3
3
—
—
—
—
6.75
11.5
13.5
16
1¹⁄₂, 1³⁄₄”
2
UH-11-1
UH-11-3
UH-11-4
M-1812
1
1⁵⁄₈
2⁵⁄₈
3⁷⁄₈
1⁹⁄₁₆
2⁹⁄₁₆
3¹³⁄₁₆
5¹⁄₈
2³⁄₄
4
5¹⁄₄
7
3³⁄₁₆
3³⁄₁₆
3³⁄₁₆
2¹⁄₂
—
—
—
—
10.5
12.25
16.25
30
2¹⁄₄, 2¹⁄₂”
M-1816
M-1817
M-1929
1¹¹⁄₁₆
2³⁄₄
3³⁄₄
2¹¹⁄₁₆
3¹¹⁄₁₆
6
4¹⁄₂
5³⁄₄
7³⁄₄
3³⁄₄
3³⁄₄
3¹⁄₂
¹³⁄₁₆
¹³⁄₁₆
³⁄₈
35
46
57
¹⁄₂, ⁵⁄₈”
DFC HOUSINGS
FAN
SIZE
A
B
D
E*
F*
H
J
K
WEIGHT
Lbs.
³⁄₄
⁷⁄₈
1
16⁷⁄₈
19⁵⁄₈
22¹⁄₂
15⁵⁄₈
18
20¹⁄₂
5⁷⁄₈
6³⁄₄
7¹³⁄₁₆
12¹⁄₂
16⁹⁄₁₆
16⁹⁄₁₆
12³⁄₈
14⁷⁄₁₆
16⁷⁄₁₆
7³⁄₁₆
8³⁄₈
9⁵⁄₈
1⁹⁄₁₆
1¹¹⁄₁₆
1¹¹⁄₁₆
2¹¹⁄₁₆
3³⁄₁₆
3⁹⁄₁₆
14
20
23
1¹⁄₈
1¹⁄₄
1³⁄₈
25⁵⁄₁₆
28
30⁵⁄₁₆
22¹³⁄₁₆
25¹⁄₄
26¹¹⁄₁₆
8¹¹⁄₁₆
9¹¹⁄₁₆
9⁷⁄₈
20⁵⁄₈
20⁵⁄₈
22³⁄₄
18⁵⁄₈
20¹⁄₂
22⁵⁄₈
10¹³⁄₁₆
12
12³⁄₄
1¹³⁄₁₆
1¹³⁄₁₆
1⁷⁄₈
4¹⁄₈
4¹⁄₂
5¹⁄₁₆
32
34
42
1¹⁄₂
1³⁄₄
2
33
28¹⁵⁄₁₆
38³⁄₈
33¹⁄₂
45¹⁵⁄₁₆ 40⁷⁄₈
10¹³⁄₁₆ 24³⁄₄
12⁷⁄₁₆ 28⁷⁄₈
16¹⁄₄
32³⁄₄
24⁵⁄₈
28³⁄₄
32⁷⁄₈
13⁷⁄₈
16¹⁄₁₆
19¹³⁄₁₆
1⁷⁄₈
2³⁄₁₆
2
5¹⁄₂
6⁷⁄₁₆
7⁵⁄₁₆
52
76
131
2¹⁄₄
2¹⁄₂
51⁵⁄₈
57³⁄₁₆
18³⁄₈
20³⁄₈
36¹⁵⁄₁₆
41
22⁵⁄₁₆
24¹¹⁄₁₆
2
2
8³⁄₁₆
9¹⁄₁₆
165
226
45³⁄₄
50⁷⁄₁₆
36¹³⁄₁₆
40⁷⁄₈
* OUTLET DIMENSIONS — OUTSIDE
29
UNITARY FAN DIMENSIONS
Unitary Fans are available in either clockwise (shown) or counter-clockwise rotation.
Bottom Horizontal discharge shown. Other discharges available.
TYPE DF
TYPE DFB — SIZES ³/₄ THRU 2
SIZES ¹/₂ & ⁵/₈
TYPE DFC — SIZES 1³/₄ THRU 2¹/₂
TYPE DFB UNITARY FAN
BHD
B†
FAN
SIZE
A
¹⁄₂
⁵⁄₈
³⁄₄
12³⁄₈
15
18⁷⁄₁₆
11¹⁄₄
13¹⁄₂
15⁵⁄₈
⁷⁄₈
1
1¹⁄₈
22⁷⁄₈
24¹⁄₈
28⁵⁄₁₆
1¹⁄₄
1³⁄₈
1¹⁄₂
1³⁄₄
2
†
UBD
B†
†
A
A
KEYWAY IN
DRIVE HUB
THD
B†
C
D
E*
F*
G
H
J
K
L
M
N
O
R
S
14¹⁄₄
15³⁄₄
19³⁄₈
4⁷⁄₁₆
5⁷⁄₁₆
5⁷⁄₈
7¹⁄₂
9
10⁵⁄₈
7¹⁄₈
8⁵⁄₈
12³⁄₈
7¹⁄₂
9
11¹⁄₄
4⁷⁄₈
6
7³⁄₁₆
1¹⁄₄
1¹⁄₄
1⁹⁄₁₆
⁷⁄₁₆
⁹⁄₁₆
2¹¹⁄₁₆
9
9³⁄₄
11
4³⁄₄
5¹⁄₂
8³⁄₈
5¹⁄₄
5¹⁄₄
5¹⁄₂
4⁵⁄₈
4³⁄₄
4⁷⁄₈
5⁹⁄₁₆
6¹³⁄₁₆
8³⁄₁₆
4¹⁄₄
5
7³⁄₄
¹⁄₄
18
22¹⁵⁄₁₆ 19⁵⁄₈
20¹⁄₂
24
22¹⁄₂
22¹³⁄₁₆ 28
25⁵⁄₁₆
25³⁄₄
27³⁄₈
32
18
20¹⁄₂
22¹³⁄₁₆
23
23
26³⁄₄
6³⁄₄
7¹³⁄₁₆
8¹¹⁄₁₆
13³⁄₄
13³⁄₄
17¹⁄₂
14⁷⁄₁₆
16⁷⁄₁₆
18⁵⁄₈
14¹⁄₂
14¹⁄₂
17¹⁄₂
8³⁄₈
9⁵⁄₈
10¹³⁄₁₆
1¹¹⁄₁₆
1¹¹⁄₁₆
1¹³⁄₁₆
3³⁄₁₆
3⁹⁄₁₆
4¹⁄₈
12³⁄₄
12³⁄₄
14⁵⁄₈
10¹⁄₄
10¹⁄₄
12¹⁄₈
6¹⁄₄
7¹⁄₄
8¹⁄₄
4³⁄₄
5³⁄₄
6³⁄₄
9⁹⁄₁₆
11
12⁵⁄₁₆
9⁵⁄₈
9⁵⁄₈
11¹⁄₂
¹⁄₄
¹⁄₄
¹⁄₄
29¹⁄₂
32¹⁄₄
34⁷⁄₈
25¹⁄₄
29
28
26¹¹⁄₁₆ 31¹⁄₄
30⁵⁄₁₆
28¹⁵⁄₁₆ 33¹¹⁄₁₆ 33
33¹⁄₂
37¹⁄₁₆
40¹⁄₈
25¹⁄₄
26¹¹⁄₁₆
28¹⁵⁄₁₆
26³⁄₄ 9¹¹⁄₁₆
29
9⁷⁄₈
29¹³⁄₁₆ 10¹³⁄₁₆
17¹⁄₂
19¹⁄₂
21
20¹⁄₂
22⁵⁄₈
24⁵⁄₈
17¹⁄₂
19¹⁄₂
21
12
12³⁄₄
13⁷⁄₈
1¹³⁄₁₆
1⁷⁄₈
1⁷⁄₈
4¹⁄₂
5¹⁄₁₆
5¹⁄₂
14⁵⁄₈
15³⁄₄
16¹⁄₄
12¹⁄₈
13¹⁄₄
13⁹⁄₁₆
9¹⁄₂
10¹⁄₄
11
8
8³⁄₄
9¹⁄₂
13³⁄₄
14¹⁵⁄₁₆
16¹⁄₄
40¹⁄₁₆
48⁵⁄₁₆
33¹⁄₂
40⁷⁄₈
46⁵⁄₁₆ 33¹⁄₂
53¹⁵⁄₁₆ 40⁷⁄₈
33⁵⁄₈
38¹⁄₂
24¹⁄₄
27⁵⁄₈
28³⁄₄
32³⁄₄
24
28¹⁄₂
16¹⁄₁₆
19¹³⁄₁₆
2³⁄₁₆
2
6⁷⁄₁₆
7⁵⁄₁₆
18³⁄₄
20¹⁄₂
15¹⁄₄
18
11¹⁄₈
12³⁄₄
9⁵⁄₈
10³⁄₄
18⁷⁄₈
22⁵⁄₈
14⁵⁄₈
17¹⁄₈
38⁵⁄₈
46³⁄₄
38³⁄₈
45¹⁄₄
†
SHAFT
EXT.
WEIGHT
WIDTH DEPTH DIA.
LBS
14³⁄₁₆ 11¹⁄₄
17¹⁄₁₆ 13¹⁄₂
20¹⁵⁄₁₆ 15⁵⁄₈
13³⁄₁₆ 11⁹⁄₁₆
15¹¹⁄₁₆ 14¹⁄₁₆
18¹¹⁄₁₆ 16⁷⁄₈
†
12⁷⁄₁₆
16¹⁄₄
¹⁄₈
1
1
1
24
27
51
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1
70
75
95
11¹⁄₂ ¹⁄₄
12⁵⁄₈ ¹⁄₄
12¹⁵⁄₁₆ ¹⁄₄
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1
102
115
148
¹⁄₄
³⁄₈
¹⁄₈
³⁄₁₆
1³⁄₁₆
1⁷⁄₁₆
190
315
OVERALL DIMENSIONS — †
OUTLET DIMENSIONS—OUTSIDE — *
TYPE DFC UNITARY FAN
BHD
UBD
FAN
SIZE
A
³⁄₄
⁷⁄₈
1
18⁷⁄₁₆ 15⁵⁄₈
22⁷⁄₈ 18
24¹⁄₈ 20¹⁄₂
1¹⁄₈
1¹⁄₄
1³⁄₈
27¹¹⁄₁₆ 22¹³⁄₁₆ 28
29¹⁄₂ 25¹⁄₄ 29
32¹⁄₄ 26¹¹⁄₁₆ 31¹⁄₄
1¹⁄₂
1³⁄₄
2
34⁷⁄₈ 28¹⁵⁄₁₆ 33¹¹⁄₁₆ 33
40¹⁄₁₆ 33¹⁄₂ 38⁵⁄₈ 38³⁄₈
48⁵⁄₁₆ 40⁷⁄₈ 46³⁄₄ 45¹⁄₄
2¹⁄₄
2¹⁄₂
54¹³⁄₁₆ 45³⁄₄ 52⁷⁄₈
60³⁄₁₆ 50⁷⁄₁₆ 57⁷⁄₈
†
B
†
†
A
†
18¹¹⁄₁₆ 16⁷⁄₈
22¹⁵⁄₁₆ 19⁵⁄₈
24
22¹⁄₂
OVERALL DIMENSIONS — †
OUTLET DIMENSIONS—OUTSIDE — *
30
B
KEYWAY IN
DRIVE HUB
THD
A
†
B
†
20¹⁵⁄₁₆ 15⁵⁄₈
25³⁄₄ 18
27³⁄₈ 20¹⁄₂
†
C
D
21¹⁵⁄₁₆ 5¹³⁄₁₆
25³⁄₁₆ 6²³⁄₃₂
25³⁄₁₆ 7²⁵⁄₃₂
24¹¹⁄₁₆ 32
22¹³⁄₁₆ 29¹⁵⁄₁₆ 8⁵⁄₈
28
33¹⁄₂ 25¹⁄₄ 29¹⁵⁄₁₆ 9⁹⁄₁₆
30⁵⁄₁₆ 37¹⁄₁₆ 26¹¹⁄₁₆ 32¹⁄₄ 9¹³⁄₁₆
40¹⁄₈ 28¹⁵⁄₁₆ 34³⁄₁₆ 10³⁄₄
46⁵⁄₁₆ 33¹⁄₂ 40¹⁄₁₆ 12³⁄₈
53¹⁵⁄₁₆ 40⁷⁄₈ 44¹³⁄₁₆ 16¹⁄₄
50¹⁵⁄₁₆ 61¹⁄₈ 45³⁄₄ 48¹⁄₈
56¹⁄₂ 67⁵⁄₁₆ 50⁷⁄₁₆ 52¹⁄₈
18³⁄₈
20³⁄₈
E*
F*
G
H
12¹⁄₂ 12³⁄₈ 11¹⁄₄ 7³⁄₁₆
16⁹⁄₁₆ 14⁷⁄₁₆ 14¹⁄₂ 8³⁄₈
16⁹⁄₁₆ 16⁷⁄₁₆ 14¹⁄₂ 9⁵⁄₈
N
SHAFT
EXT.
WEIGHT
WIDTH DEPTH DIA.
LBS
J
K
L
M
O
R
S
1⁵⁄₈
1²³⁄₃₂
1²³⁄₃₂
2¹¹⁄₁₆
3³⁄₁₆
3⁹⁄₁₆
11⁷⁄₈
14¹⁄₈
14¹⁄₈
10¹¹⁄₁₆ 5¹⁄₂
11¹¹⁄₁₆ 6¹⁄₄
11¹¹⁄₁₆ 7¹⁄₄
4⁷⁄₈
4³⁄₄
5³⁄₄
8³⁄₁₆
9⁹⁄₁₆
11
9⁷⁄₁₆ ¹⁄₄
11¹⁄₁₆ ¹⁄₄
11¹⁄₁₆ ¹⁄₄
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1
53
74
81
6³⁄₄
8
8³⁄₈
12⁵⁄₁₆ 13¹⁄₁₆ ¹⁄₄
13³⁄₄ 13¹⁄₁₆ ¹⁄₄
14¹⁵⁄₁₆ 13⁷⁄₈ ¹⁄₄
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1³⁄₁₆
103
112
127
¹⁄₈
³⁄₁₆
³⁄₁₆
1³⁄₁₆ 162
1⁷⁄₁₆ 212
1¹¹⁄₁₆ 353
¹⁄₄
¹⁄₄
2³⁄₁₆
2³⁄₁₆
20⁵⁄₈
20⁵⁄₈
22³⁄₄
18⁵⁄₈
20¹⁄₂
22⁵⁄₈
17¹⁄₂ 10³⁄₁₆ 1⁷⁄₈
17¹⁄₂ 12
1¹⁵⁄₁₆
19¹⁄₂ 12³⁄₄ 1¹⁵⁄₁₆
4¹⁄₈
4¹⁄₂
5¹⁄₁₆
16¹⁄₄
16¹⁄₄
17³⁄₄
13¹¹⁄₁₆ 8¹⁄₄
13¹¹⁄₁₆ 9¹⁄₂
14¹⁄₂ 9⁷⁄₈
24³⁄₄
28⁷⁄₈
32⁷⁄₈
24⁵⁄₈
28³⁄₄
32³⁄₄
21
13⁷⁄₈ 1¹⁵⁄₁₆
24
16¹⁄₁₆ 2¹⁄₄
28¹⁄₂ 19¹³⁄₁₆ 2
5¹⁄₂
6⁷⁄₁₆
7⁵⁄₁₆
18³⁄₄
21¹⁄₂
24¹⁄₄
15⁷⁄₁₆ 11
9¹⁄₂ 16¹⁄₄
18⁹⁄₁₆ 11¹³⁄₁₆ 9³⁄₄ 18⁷⁄₈
20⁹⁄₁₆ 12³⁄₄ 10³⁄₄ 22⁵⁄₈
14¹³⁄₁₆ ¹⁄₄
17¹¹⁄₁₆ ³⁄₈
19¹¹⁄₁₆ ³⁄₈
8³⁄₁₆
9¹⁄₁₆
27
29
21¹⁄₈ 12
23¹⁄₈ 12
20
22
36¹⁵⁄₁₆ 36¹³⁄₁₆ 32¹⁄₂ 22⁵⁄₁₆ 2
41
40⁷⁄₈ 35¹⁄₂ 24¹¹⁄₁₆ 2
7¹⁄₂
7¹⁄₂
25³⁄₈
28¹⁄₁₆
¹⁄₂
¹⁄₂
570
690
DUPLEX FAN DIMENSIONS
Unitary Fans are available in either clockwise (shown) or counter-clockwise rotation.
Bottom Horizontal discharge shown. Other discharges available.
TYPE DFB — SIZES ¹/₂ THRU 1³/₄
TYPE DFB — SIZE 2
TYPE DFC — SIZES ³/₄ THRU 1¹/₂
TYPE DFC — SIZES 1³/₄ THRU 2¹/₂
TYPE DFB DUPLEX FAN
BHD
B†
UBD
B†
THD
B†
FAN
SIZE
A†
¹⁄₂ **
⁵⁄₈ **
³⁄₄
13¹⁄₈ 11¹⁄₄
15³⁄₄ 13¹⁄₂
18⁷⁄₁₆ 15⁵⁄₈
⁷⁄₈
1
1¹⁄₈
22⁷⁄₈ 18
22¹⁵⁄₁₆ 19⁵⁄₈ 25³⁄₄
24¹⁄₈ 20¹⁄₂ 24
22¹⁄₂ 27³⁄₈
28⁵⁄₁₆ 22¹³⁄₁₆ 28
25⁵⁄₁₆ 32
1¹⁄₄
1³⁄₈
1¹⁄₂
29¹⁄₂
32¹⁄₄
34⁷⁄₈
1³⁄₄
2
40¹⁄₁₆ 33¹⁄₂
48⁵⁄₁₆ 40⁷⁄₈
A†
A†
13¹⁵⁄₁₆ 11⁹⁄₁₆ 14¹⁵⁄₁₆ 11¹⁄₄
16⁷⁄₁₆ 14¹⁄₁₆ 17¹³⁄₁₆ 13¹⁄₂
18¹¹⁄₁₆ 16⁷⁄₈ 20¹⁵⁄₁₆ 15⁵⁄₈
KEYWAY IN
DRIVE HUB
C†
D
E*
F*
G
29³⁄₈
33⁷⁄₈
39³⁄₈
4⁷⁄₁₆
5⁷⁄₁₆
5⁷⁄₈
7¹⁄₂
9
10⁵⁄₈
7¹⁄₈
8⁵⁄₈
12³⁄₈
8¹⁄₄ 4⁷⁄₈
9³⁄₄ 6
11¹⁄₄ 7³⁄₁₆
13³⁄₄
13³⁄₄
17¹⁄₂
14⁷⁄₁₆ 14¹⁄₂ 8³⁄₈
1¹¹⁄₁₆ 3 ³⁄₁₆
16⁷⁄₁₆ 14¹⁄₂ 9⁵⁄₈
1¹¹⁄₁₆ 3 ⁹⁄₁₆
18⁵⁄₈ 17¹⁄₂ 10¹³⁄₁₆ 1¹³⁄₁₆ 4 ¹⁄₈
18
46¹⁵⁄₁₆ 6³⁄₄
20¹⁄₂ 46¹⁵⁄₁₆ 7¹³⁄₁₆
22¹³⁄₁₆ 56¹¹⁄₁₆ 8¹¹⁄₁₆
25¹⁄₄ 29
28
33¹⁄₂ 25¹⁄₄ 56¹¹⁄₁₆ 9¹¹⁄₁₆ 17¹⁄₂
26¹¹⁄₁₆ 31¹⁄₄ 30⁵⁄₁₆ 37¹⁄₁₆ 26¹¹⁄₁₆ 62¹⁄₁₆ 9⁷⁄₈
19¹⁄₂
28¹⁵⁄₁₆ 33¹¹⁄₁₆ 33
40¹⁄₈ 28¹⁵⁄₁₆ 66⁵⁄₈ 10¹³⁄₁₆ 21
38⁵⁄₈
46³⁄₄
38³⁄₈
45¹⁄₄
46⁵⁄₁₆ 33¹⁄₂
53¹⁵⁄₁₆ 40⁷⁄₈
76⁷⁄₈
89
12⁷⁄₁₆ 24¹⁄₄
16¹⁄₄ 27⁵⁄₈
H
J
K
1¹⁄₄
1¹⁄₄
1⁹⁄₁₆
⁷⁄₁₆
9¹⁄₁₆
⁹⁄₁₆
9¹³⁄₁₆
2 ¹¹⁄₁₆ 11¹⁄₂
1¹³⁄₁₆ 4 ¹⁄₂
1⁷⁄₈
5 ¹⁄₁₆
1⁷⁄₈
5 ¹⁄₂
20¹⁄₂
22⁵⁄₈
24⁵⁄₈
17¹⁄₂ 12
19¹⁄₂ 12³⁄₄
21
13⁷⁄₈
28³⁄₄
32³⁄₄
24
16¹⁄₁₆ 2³⁄₁₆
28¹⁄₂ 19¹³⁄₁₆ 2
6 ⁷⁄₁₆
7 ⁵⁄₁₆
L
N
P
R
13⁵⁄₁₆ 5¹⁄₈
15⁹⁄₁₆ 5³⁄₈
17⁷⁄₈ 5¹⁄₂
3³⁄₄
4¹⁄₂
4⁷⁄₈
7
8¹⁄₂
10
5⁹⁄₁₆ 12¹³⁄₁₆
6¹³⁄₁₆ 15¹⁄₁₆
8³⁄₁₆ 17³⁄₈ ¹⁄₄
21¹⁵⁄₁₆ 6¹⁄₄
21¹⁵⁄₁₆ 7¹⁄₄
26¹³⁄₁₆ 8¹⁄₄
4³⁄₄
5³⁄₄
6³⁄₄
12
12
15
9⁹⁄₁₆ 21⁵⁄₁₆
11
21⁵⁄₁₆
12⁵⁄₁₆ 26³⁄₁₆
¹⁄₄
¹⁄₄
¹⁄₄
14⁷⁄₈ 26¹³⁄₁₆ 9¹⁄₂
16¹⁄₄ 29⁵⁄₁₆ 10¹⁄₄
17¹⁄₁₆ 31⁹⁄₁₆ 11
8
8³⁄₄
9¹⁄₂
15
16¹⁄₂
18
18³⁄₄
20¹⁄₂
9⁵⁄₈ 20¹⁵⁄₁₆ 18⁷⁄₈ 36⁵⁄₁₆
10³⁄₄ 24
22⁵⁄₈ 17¹⁄₈
37³⁄₁₆ 11¹⁄₈
18
12³⁄₄
S
SHAFT
EXT.
WEIGHT
WIDTH DEPTH DIA.
LBS
O
13
13
14⁷⁄₈
M
¹⁄₈
1
1
1
50
60
85
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1
121
135
192
13³⁄₄ 26³⁄₁₆ ¹⁄₄
14¹⁵⁄₁₆ 28¹¹⁄₁₆ ¹⁄₄
16¹⁄₄ 30¹⁵⁄₁₆ ³⁄₈
¹⁄₈
¹⁄₈
³⁄₁₆
1
1³⁄₁₆
1⁷⁄₁₆
195
255
315
³⁄₈
³⁄₈
³⁄₁₆
³⁄₁₆
1⁷⁄₁₆
1⁷⁄₁₆
490
636
OVERALL DIMENSIONS — †
OUTLET DIMENSIONS - OUTSIDE — *
SIZES ¹⁄₂ & ⁵⁄₈ ARE TYPE DF — **
TYPE DFC DUPLEX FAN
BHD
B†
UBD
B†
THD
B†
KEYWAY IN
DRIVE HUB
FAN
SIZE
A
³⁄₄
⁷⁄₈
1
18⁷⁄₁₆ 15⁵⁄₈
22⁷⁄₈ 18
24¹⁄₈ 20¹⁄₂
1¹⁄₈
1¹⁄₄
1³⁄₈
28⁵⁄₁₆ 22¹³⁄₁₆ 28
29¹⁄₂ 25¹⁄₄ 29
32¹⁄₄ 26¹¹⁄₁₆ 31¹⁄₄
1¹⁄₂
1³⁄₄
2
34⁷⁄₈ 28¹⁵⁄₁₆ 33¹¹⁄₁₆ 33
40¹⁄₈ 28¹⁵⁄₁₆ 74¹⁄₈
40¹⁄₁₆ 33¹⁄₂ 38⁵⁄₈ 38³⁄₈ 46⁵⁄₁₆ 33¹⁄₂ 89¹⁄₂
48⁵⁄₁₆ 40⁷⁄₈ 46³⁄₄ 45¹⁵⁄₁₆ 54⁵⁄₈ 40⁷⁄₈ 102
2¹⁄₄
2¹⁄₂
54¹³⁄₁₆ 45³⁄₄ 52⁷⁄₈
60³⁄₁₆ 50⁷⁄₁₆ 57⁷⁄₈
†
A
†
18¹¹⁄₁₆ 16⁷⁄₈
22¹⁵⁄₁₆ 19⁵⁄₈
24
22¹⁄₂
A
†
20¹⁵⁄₁₆ 15⁵⁄₈
25³⁄₄ 18
27³⁄₈ 20¹⁄₂
C
†
D
43¹⁄₈ 5¹³⁄₁₆
52⁹⁄₁₆ 6²³⁄₃₂
52⁹⁄₁₆ 7²⁵⁄₃₂
25⁵⁄₁₆ 32
22¹³⁄₁₆ 62¹⁵⁄₁₆ 8⁵⁄₈
28
33¹⁄₂ 25¹⁄₄ 62¹⁵⁄₁₆ 9⁹⁄₁₆
30⁵⁄₁₆ 37¹⁄₁₆ 26¹¹⁄₁₆ 68⁹⁄₁₆ 9¹³⁄₁₆
10³⁄₄
12³⁄₈
16¹⁄₄
51⁵⁄₈ 61¹³⁄₁₆ 45³⁄₄ 113¹⁄₂ 18³⁄₈
57³⁄₁₆ 68
50⁷⁄₁₆ 125 20³⁄₈
E*
F*
G
H
12¹⁄₂ 12³⁄₈ 11¹⁄₄ 7³⁄₁₆
16⁹⁄₁₆ 14⁷⁄₁₆ 14¹⁄₂ 8³⁄₈
16⁹⁄₁₆ 16⁷⁄₁₆ 14¹⁄₂ 9⁵⁄₈
J
K
L
1⁵⁄₈
1²³⁄₃₂
1²³⁄₃₂
2¹¹⁄₁₆
3³⁄₁₆
3⁹⁄₁₆
M
N
O
P
R
12⁷⁄₁₆ 19³⁄₄ 5¹⁄₂
14¹³⁄₃₂ 24³⁄₄ 6¹⁄₄
14¹³⁄₃₂ 24³⁄₄ 7¹⁄₄
4⁷⁄₈
4³⁄₄
5³⁄₄
11⁷⁄₈ 8³⁄₁₆
14¹³⁄₁₆ 9⁹⁄₁₆
14¹³⁄₁₆ 11
6³⁄₄
8
8³⁄₈
18¹⁄₈
18¹⁄₈
19³⁄₄
S
SHAFT
EXT.
WEIGHT
WIDTH DEPTH DIA.
LBS
21¹⁄₈ ¹⁄₄
26¹⁵⁄₁₆ ¹⁄₄
26¹⁵⁄₁₆ ¹⁄₄
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1
89
129
147
¹⁄₄
¹⁄₄
¹⁄₄
¹⁄₈
¹⁄₈
¹⁄₈
1
1
1³⁄₁₆
208
215
271
³⁄₁₆
³⁄₁₆
³⁄₁₆
1⁷⁄₁₆
1⁷⁄₁₆
1¹¹⁄₁₆
349
435
715
¹⁄₄
¹⁄₄
2³⁄₁₆
2³⁄₁₆
1160
1400
20⁵⁄₈
20⁵⁄₈
22³⁄₄
18⁵⁄₈
20¹⁄₂
22⁵⁄₈
17¹⁄₂ 10³⁄₁₆ 1⁷⁄₈
17¹⁄₂ 12
1¹⁵⁄₁₆
19¹⁄₂ 12³⁄₄ 1¹⁵⁄₁₆
4¹⁄₈
4¹⁄₂
5¹⁄₁₆
16⁷⁄₁₆ 29¹⁵⁄₁₆ 8¹⁄₄
16⁷⁄₁₆ 29¹⁵⁄₁₆ 9¹⁄₂
17⁷⁄₈ 32⁹⁄₁₆ 9⁷⁄₈
24³⁄₄
28⁷⁄₈
32⁷⁄₈
24⁵⁄₈
28³⁄₄
32³⁄₄
21
13⁷⁄₈ 1¹⁵⁄₁₆
24
16¹⁄₁₆ 2¹⁄₄
28¹⁄₂ 19¹³⁄₁₆ 2
5¹⁄₂
6⁷⁄₁₆
7⁵⁄₁₆
18¹⁵⁄₁₆ 35⁵⁄₁₆ 11
9¹⁄₂ 21³⁄₄
21¹⁄₂ 18⁹⁄₁₆ 11¹³⁄₁₆ 9³⁄₄ 23¹⁄₄
24¹⁄₄ 20⁹⁄₁₆ 12³⁄₄ 10³⁄₄ 26³⁄₄
16¹⁄₄ 38⁷⁄₁₆ ³⁄₈
18⁷⁄₈ 17¹¹⁄₁₆ ³⁄₈
22⁵⁄₈ 19¹¹⁄₁₆ ³⁄₈
8³⁄₁₆
9¹⁄₁₆
27
29
25³⁄₈ 20
28¹⁄₁₆ 22
36¹⁵⁄₁₆ 36¹³⁄₁₆ 32¹⁄₂ 22⁵⁄₁₆ 2
41
40⁷⁄₈ 35¹⁄₂ 24¹¹⁄₁₆ 2
21¹⁄₈ 12
23¹⁄₈ 12
7¹⁄₂
7¹⁄₂
29³⁄₄
33¹⁄₄
12⁵⁄₁₆ 32⁷⁄₁₆
13³⁄₄ 32⁷⁄₁₆
14¹⁵⁄₁₆ 35³⁄₁₆
¹⁄₂
¹⁄₂
OVERALL DIMENSIONS — †
OUTLET DIMENSIONS—OUTSIDE — *
31
Represented By:
Power Equipment Company
2011 Williamsburg Road
Richmond, VA 23231
Tel: 804-236-3800 Fax: 804-236-3882
www.peconet.com
UNI-COMBUSTION FANS
FUME HOOD FANS
UNITARY, SINGLE AND
DUPLEX FANS
Complete fan assemblies and
parts for supplying combustion air
for oil, gas and coal firing. Built in
11 basic sizes with capacities from
200 to 24,000 CFM at static pressures to 10” W.G. with vortex inlet
damper control for improved volume regulation and power saving.
Specify Bulletin 18001.
Complete Fan Assemblies
including fans, housings, drives
and covers for exhausting fumes
from industrial and institutional
laboratory hoods or other corrosive fume exhaust systems.
Completely packaged, ready-torun in four basic sizes with capacities from 250 to 6300 CFM at static pressures to 5” W.G. Available
with Forward Curved or Backward
Inclined fan wheels.
Specify Bulletin 26001.
Complete fan assemblies, parts
or kits designed for heavy duty
applications, including ovens, dryers, air conditioning units, heaters,
coolers, condensers and air curtains. Fully riveted or staked fan
wheels with welded housings.
Capacities from 150 to 88,000
CFM at static pressures to 8” W.G.
and temperatures to 1000º F.
Specify Bulletin 6131.
DFB Duplex Fan Assembly
Arrangement 4E Assembly
Fume Hood Fan Assembly
UC Wheel Internal Hub
DF Wheel
UC Wheel External Hub
Multiple Width Wheels
1/98
Fume Hood Wheels With
Pressure Bars
Wheel Diameters 6-1/2” through 32-1/2”
Custom Fan Assemblies & Kits
Individual Wheels, Housings, and Component
Parts Available
Aluminum, Stainless Steel, Monel, and Galvanized
Steel Construction
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