LM375D

®
3900 Dr. Greaves Rd.
•
Kansas City, MO 64030
•
(816) 761-7476
•
FAX (816) 765-8955
LM375D ADJUSTABLE DRAINABLE LOUVER
FORMED STEEL
STANDARD CONSTRUCTION
FEATURES
FRAME
4" (102) deep, 16 (1.6) gage galvanized
steel. Caulking surface provided.
BLADES
18 (1.3) gage galvanized steel drainable
blades are positioned at 37 1/ 2° angle
and spaced approximately 3 3 / 8 " (86)
center to center.
SCREEN
1 / 2 " (13) mesh x 19 gage (1.1) galvanized bird screen in removable frame.
Screen adds approximately 1/2" (13) to
louver depth.
FINISH
Mill.
LINKAGE
Concealed in frame
BEARINGS
Stainless Steel.
AXLES
Plated steel hex.
ACTUATOR
Louver quadrant.
MINIMUM SIZE
12"w x 12"h (305 x 305).
APPROXIMATE SHIPPING WEIGHT
6 lbs. per sq. ft. (29.3 per m2).
MAXIMUM FACTORY ASSEMBLY SIZE
Shall be 60"w x 96"h (1524 x 2438) without seals. Louvers with optional blade
and jamb seals shall be 48"w x 96"h
(1219 x 2438). Louvers larger than the
maximum factory assembly size will
require field assembly of smaller sections.
The LM375D offers:
• 44% Free Area
• Published performance ratings based
on testing in accordance with AMCA
Publication 511.
• Rugged galvanized steel construction for
long operating life.
• Stainless steel bearings and concealed
linkage to reduce operating torque
requirements.
B*
VARIATIONS
Variations to the basic design of this louver
are available at additional cost. They
include:
• Extended sill.
• Hinged frame.
• Front or rear security bars.
• Filter racks.
• Installation angles.
• A variety of bird and insect screens.
• Selection of finishes: prime coat, baked
enamel (modified fluoropolymer), epoxy,
Pearledize 50 & 70, and Kynar.
A*
Consult Ruskin for other special requirements.
FRAME CONSTRUCTION
Bird
Screen
11/2" (38)
1" (25)
Consult Ruskin for additional information.
Water
Stop
A* X B*
Varies
STANDARD
INTEGRAL FLANGE
4"
(102)
Dimensions in parenthesis (
) indicate millimeters.
SIZE
TAG
QTY.
FRAME
A*-WIDE
PROJECT
ARCH./ENGR.
REPRESENTATIVE
Spec LM375D-703/New
Units furnished 1/4" (6) smaller than given opening dimensions.
VARIATIONS
B*-HIGH
LOCATION
CONTRACTOR
DATE
ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION.
© Ruskin Manufacturing July 2003
SUGGESTED SPECIFICATION
Furnish and install louvers as hereinafter specified where shown on
plans or as described in schedule. Louvers shall be stationary type
entirely contained within a 4" (102) frame. Louver components
(heads, jambs, sills, blades & mullions) shall be factory assembled
by the louver manufacturer. Louver sizes too large for shipping
shall be built up by the contractor from factory assembled louver
sections to provide overall sizes required. Louver design shall
incorporate structural supports required to withstand a wind load of
20 lbs. per sq. ft. (.96kPa) equivalent of a 90 mph wind [145 KPH] specifier may substitute any loading required).
Louvers shall be Ruskin Model LM375D construction as follows:
Frame: 16 (1.6) gage galvanized steel.
Blades: 18 (1.3) gage galvanized steel at 371/2° angle and spaced
approximately 33/8" (86) center to center.
Screen: .50 (13) mesh x 19 gage (1.1) galvanized steel in remoable frame.
Finish: Select finish specification from Ruskin Finishes Brochure.
Published louver performance data bearing the AMCA Certified
Ratings Seal for Air Performance & Water Penetration must be
submitted for approval prior to fabrication and must demonstrate
pressure drop and water penetration equal to or less than Ruskin
model specified.
PERFORMANCE DATA
AMCA Standard 500 provides a reasonable basis for testing and
rating louvers. Testing to AMCA 500 is performed under a certain
set of laboratory conditions. This does not guarantee that other
conditions will not occur in the actual environment where louvers
must operate. Designs should provide a reasonable safety factor
for louver performance by selecting at some point below pressure
drop or water penetration system requirements.
WATER PENETRATION
Test size 48" wide x 48" high (1219 x 1219)
Beginning point of water penetration at .01 oz./sq. ft. is 1027 fpm (313 m/min).
0.3
(3.23)
Oz. Water/ft2 and (ml water/m2) of Free Area
15 min. Test Period
0.25
(2.69)
0.2
(2.15)
Ruskin Manufacturing certifies that the louver shown
herein is licensed to bear the
AMCA Seal. The ratings
shown are based on tests
and procedures performed in
accordance with AMCA
Standard 511 and comply
with the requirements of the
AMCA Certified Ratings
Program. AMCA Certified
Ratings Seal applies to air
performance and water penetration ratings only.
0.15
(1.61)
0.1
(1.08)
0.05
(.54)
0
900
(274)
1000
(305)
1100
(335)
1200
(366)
1300
(396)
Free Area Velocity in feet (meters) per minute
Standard air .075 lb/ft3 (1.2 kg/m3 )
FREE AREA GUIDE
Height – Inches and Meters
Free Area Guide shows free area in ft2 and m2 for various sizes of LM375D.
Width – Inches and Meters
PRESSURE DROP
Static Pressure Drop in Inches w.g. (Pa)
Test size 48" x 48" (1219 x 1219)
Ratings do not include the
effect of a bird screen.
Air Velocity in feet (meters) per minute through Free Area
TYPICAL INSTALLATION DETAILS
Standard
Frame
Sealant
(by others)
Flange
Frame
Anchors
(by others)
Installation
Angles
(optional)
Louver
Extended
Sill
(Optional)
Front
Flange
Frame
Louver
Anchors
(by others)
*Multi-section units may require additional anchorage points.
Optional items are available at additional cost. Anchors or other fasteners securing installation angles to substrate are by others.
®
3900 Dr. Greaves Rd.
Kansas City, MO 64030
(816) 761-7476
FAX (816) 765-8955
www.ruskin.com