Professional hoods ON/OFF 48", 36" and 30" tapered-sided hoods ZV48TSFSS 48", 36" and 30" straight-sided hoods ZV48SSFSS ZV30HSRSS 30" undercabinet hood ZV48RSFSS, ZV36RSFSS and ZV30RSFSS ZV48TSFSS, ZV36TSFSS and ZV30TSFSS ZV48SSFSS, ZV36SSFSS and ZV30SSFSS ZV30HSRSS Overall dimensions (WxHxD in inches): 48 x 22-1/2 x 25 36 x 22-1/2 x 25 30 x 22-1/2 x 25 Amps @ 110 Volts 12.4/6.4/6.4 Approx. shipping wt. (lbs.) 130/110/100 Overall dimensions (WxHxD in inches): 48 x 18 x 25 36 x 18 x 25 30 x 18 x 25 Amps @ 110 Volts 12.4/6.4/6.4 Approx. shipping wt. (lbs.) 130/110/100 Overall dimensions (WxHxD in inches): 48 x 18 x 25 36 x 18 x 25 30 x 18 x 25 Amps @ 110 Volts 12.4/6.4/6.4 Approx. shipping wt. (lbs.) 130/110/100 Overall dimensions (WxHxD in inches): 30 x 10-1/2 x 25 Amps @ 120 Volts Approx. shipping wt. (lbs.) • 10" round exhaust duct • Exhaust damper • Snap-in blower assembly • 6" and 12" standard or full-width stackable duct covers (order separately) • Stainless steel backsplash included • Warming shelf included • 10" round exhaust duct • Exhaust damper • Snap-in blower assembly • 6" and 12" standard-width stackable duct covers (order separately) • 10" round exhaust duct • Exhaust damper • Snap-in blower assembly • 6" and 12" standard- or full-width stackable duct covers (order separately) • 8" round exhaust duct • 3-1/2" louvered or non-louvered riser (included) • Recirculating option will require the use of the 3-1/2" louvered riser. 48", 36" and 30" restaurant-style hoods ZV48RSFSS 3.3 90 General features Professional styling. Crafted of premium-grade stainless steel, with every edge buffed by hand, Monogram® Professional hoods make a compelling statement of quality and refinement. Powerful ventilation. A powerful centrifugal blower and variable-speed control keep your kitchen free of fumes and excess heat. Infrared warming lamps. Powerful infrared lamps on wall-mounted hoods cast a warm glow over the cooking surface, while generating the heat necessary to keep baked goods at ready-to-serve temperatures. Brilliant task lighting. Halogen lights illuminate the cooktop surface below and can be adjusted to complement the dining occasion. Removable filters. During ventilation, stainless steel filters trap airborne grease particles, and can be easily removed for safe cleaning in your dishwasher. For additional details on product installation, warranty coverage, care and maintenance, visit monogram.com. 54" and 42" island hoods ZV54ISHSS and ZV42ISHSS Overall dimensions (WxHxD in inches): 54 x 24 x 36-1/4 42 x 20 x 31-1/2 Amps @ 120 Volts Approx. shipping wt. (lbs.) 10.4/9.5 210/170 • 10" round exhaust duct • 8' ceiling duct cover and support (included) • Optional 9'–10' ceiling duct cover and support available 56 monogram.com Professional vent hoods Ductwork planning Restaurant-style, tapered- and straight-sided hoods Select a Professional hood with straight or tapered sides, or a dramatic restaurant-style hood to match the width of the range, rangetop or cooktop. All Professional hoods are available in 48", 36" and 30" widths. Restaurant-style, tapered- and straight-sided hoods These vent hoods are equipped for 10" round ductwork. For best performance, use 10" round ductwork on the 48"-wide hoods. 36" and 30" hoods may be transitioned to 8" round. • Hoods may be vented vertically through upper cabinets, soffit or ceiling. The blower outlet is 8-1/8" x 8". A duct transition to 10" round with damper is supplied for vertical exhaust. Use locally supplied elbows to vent horizontally. • Use metal ductwork only. Under-cabinet hoods These vent hoods are designed to be installed onto a wall or beneath a soffit or cabinet. • For satisfactory performance, duct run should not exceed 150 feet equivalent length for any duct configuration. Refer to the duct fittings chart in the installation instructions. • Install these hoods 24" minimum to 36" maximum above the cooking surface. • Install a wall cap or roof cap with damper at the exterior opening. Order the wall or roof cap and any transition needed in advance. Island hoods Both models are shipped with a support frame and duct cover for ceiling heights of 7'11" up to 8'5". • Accessories are available to reach ceiling heights from 8'6" to 10'4". These accessories include telescoping support frames and decorative covers. • Optional accessories must be ordered with the hood and be on-site before final framing and wall finishing. • A mounting template is provided with each hood to help accurately locate the hood above the cooking surface and to locate the mounting frame and screws. • For a finished appearance, a top cover is supplied with both hoods. Install the top cover whenever the top of the hood will be visible. Structural suppor t Restaurant-style, tapered- and straight-sided hoods All Professional hoods weigh over 100 pounds; therefore adequate structural support must be provided. Hoods must be secured to vertical studs or to studs in the soffit. • It is strongly recommended that the vent hood and duct cover(s) if used, be on-site before final framing and wall finishing. This will help to accurately locate the ductwork and electrical service. • Final installation will be much easier if the hood is installed before the range, rangetop or cooktop underneath. Island hoods These vent hoods are heavy. Adequate structural support must be provided. The ceiling structure must be capable of supporting the weight of the hood and any inadvertent user contact loads (approximately 300 lbs.). Under-cabinet hoods • This vent hood is designed to be installed beneath a cabinet or beneath a cabinet mounted to a soffit. Custom hood inser ts This vent hood can be installed over any 30" Monogram Professional rangetops or ranges. Professional hoods • Plan the shortest and straightest route for venting exhaust to the outdoors. • This hood is designed for 8" round ducting. The 8" round duct can transition to 3-1/4" x 10" or 3-1/4" x 12". • Recirculating option requires the use of 3-1/2" louvered riser. • Plan the route for venting exhaust to the outdoors considering any transitions you may require. • Use locally supplied ducting to vent horizontally through the rear wall or vertically through the ceiling. • Use the shortest and straightest duct route possible. For satisfactory performance, duct run should not exceed 100' equivalent length for any duct configurations. te l e s c o p i c d o w n d r a f t v e nt s • All models can be installed onto a wall or beneath a soffit. Decorative duct covers are available for all models. The duct cover conceals the ductwork running from the top of the hood to the ceiling or soffit. Duct covers are available in 6" or 12" heights. Stack one or more duct covers to reach your ceiling height. chimney hoods Advance planning for professional hoods • Refer to “Duct Fittings” chart to compute the maximum permissible length for duct runs to the outdoors. • Install a wall or roof cap with damper at the exterior opening. Order the wall or roof cap and any transition and length of duct needed in advance from a local hardware store. • Determine the exact location of the vent hood. • Wall or ceiling duct must be projected out at least 1" for duct connection. • For better air flow results, use rigid metal ductwork. Ductwork planning for recirculation mode All parts are included to install in recirculation mode. Mounting for adequate support • The hood must be secured to vertical studs in the wall. See the Wall or Ceiling and Cabinet Preparation section for vented or recirculation installation. • We strongly recommend that the vent hood be on-site to accurately locate the ductwork and electrical service. • Installation will be easier if the vent hood is installed before the cooktop and countertop are installed. 57 Advance planning for professional hoods to the rear knockout and junction box. Island hoods These vent hoods are equipped for 10" round rigid metal duct. Maximum equivalent duct length is 150 ft. Install a roof cap with damper at the exterior opening. • T he exact location for the house wiring depends on the installation height and size of the hood. See installation instructions for details. Electrical requirements • On wall-mounted hoods, the junction box is fastened to the back of the hood on the right side. If necessary, the junction box can be relocated to the top of the hood. These vent hoods must be supplied with 120V, 60Hz, and connected to an individual, properly grounded branch circuit protected by a 15- or 20-amp circuit breaker or time-delay fuse. • On island hoods, the junction box is located on the top of the hood and is concealed by ductwork. • On wall-mounted hoods, the back side is recessed, providing a large area for the house wiring to exit the wall and be routed Restaurant-style hood dimensions 12" 12" 47-15/16" 12" 35-15/16" 10" 10" 22-1/2" 22-1/2" 25" 47-15/16" 29-15/16" 22-1/2" 35-15/16" 25" ZV48RSFSS 10" 29-15/16" 25" ZV36RSFSS ZV30RSFSS Straight-sided hood dimensions 12" 12" 605Dia138 18" 12" 605Dia140 605Dia139 47-15/16" 35-15/16" 18" 25" 47-15/16" 18" 25" 35-15/16" ZV48SSFSS Tapered-sided hood dimensions 605Dia132 12" 40" 29-15/16" 25" ZV36SSFSS Under- cabinet hood dimensions 605Dia133 12" 30" 29-15/16" ZV30SSFSS 605Dia136 3-1/2" 18" 10-1/2" 25" 12" 47-15/16" ZV48TSFSS 717Dia5 18" ZV30HSRSS with louvered riser 28" Island hood dimensions 14" 16" 25-3/4" 33" 9"* 5"* 25" 35-15/16" ZV36TSFSS 12" 22" 20" 24" 717Dia6 18" 36-1/4" 25" 58 29-15/16" ZV30TSFSS 54" Model ZV54ISHSS supplied duct cover *5" for ceiling 20-1/4"W heights of 7’11" to 8’5" dimensions: x 12"D x 5"H using the supplied support frame and duct cover 31-3/4" 42" *9" for ceiling heights of 7'11" to 8'5" using the supplied support frame and duct cover *9" for ceiling heights of 7’11" to 8’5" Model supplied duct usingZV42ISHSS the supplied support frame andcover duct cover dimensions: 16"W x 12"D x 9"H monogram.com Advance planning for professional hoods Restaurant-style hoods Determine bottom of hood location (Dim. A) by subtracting 12-1/2" from the desired installation height. Note: Exact installation height is affected by the use of the supplied warming shelf and by the use of duct covers. chimney hoods Installation height requirements Under-cabinet hood This vent hood can be installed for vented or recirculating operation. It can be installed over a Monogram® 30" gas, digital or induction cooktop, and 30" Monogram Professional range. Installation height should measured as shown below. Installation Height 30" Min. 36" Max. 32" Min. 38" Max. 24" Min. 36" Max. Note: Clearances may vary due to type of cooking product and local codes. Check with local inspectors to be sure standard is applicable. Custom hood inser ts Restaurant-style hoods are supplied with a stainless steel backsplash and a warming shelf. Install the hood with or without either. Clearances to the cooking605Dia141 surface will vary depending upon use of the warming shelf. Professional hoods Dim. A Note: Installation height should be measured from the cooking surface to the lowest part of the hood. Installation with supplied warming shelf Install the hood 32" minimum to 38" maximum above any type cooking surface when the warming shelf is used. 8 ft. Ceiling 605Dia137 If you are installing the hood above a gas or electric drop-in style cooktop, the hood may be installed as low as 24" above the cooking surface. Tapered- and straight-sided hoods Install these vent hoods 30" minimum to 36" maximum above the cooking surface of any Professional range or rangetop. If you intend to install the hood above a gas or electric drop-in style cooktop, the hood may be installed as low as 24" above the cooking surface. Note: Exact installation height may be determined by use of one or more duct covers. 8 ft. Ceiling 9" Supplied Duct Cover 5" Supplied Duct Cover 31" 31" ZV42I ZV54I te l e s c o p i c d o w n d r a f t v e nt s Installation without warming shelf Install these vent hoods 30" minimum to 36" maximum above the cooking surface of any Professional-style range or rangetop. Island hoods These vent hoods must be installed 30" minimum to 36" maximum above the cooking surface—regardless of ceiling height. Therefore, installation height of the hood depends on the exact ceiling height of the kitchen. Example: Hood installation height with 8' ceilings. • If the ceiling height is 7'11", the hood installation height above the cooking surface will be 30". • If the ceiling height is 8'5", the hood installation height above the cooking surface will be 36". 30" MIN. 36" MAX. 59 605Dia129 Advance planning for professional hoods Duct Cover(s) 10" Hood Height Duct cover accessories Standard duct covers Standard duct covers are for Professional restaurant-style, tapered- and straight-sided hoods. Available in 6" and 12" heights, duct covers may be stacked in various combinations to conceal the ductwork running from the top of the hood. To avoid unsightly gaps above the hood, plan the hood installation height with consideration to duct cover use. 12" Duct Cover 6" Duct Cover Hood 6" duct cover 12" duct cover ZV48 ZX48DC6 ZX48DC12 ZV36, ZV30 ZX36DC6 ZX36DC12 Dimensions (in inches) 6H or 12H x 19-11/16W x 11-7/8D 6H or 12H x 15-3/4W x 11-7/8D 605Dia142 30" Min. 36" Max. Ceiling Height to Floor 1. Measure the exact ceiling height. 2. Review the chart at right to determine the range of hood installation heights that can be accomplished with a 6" or 12" duct cover accessory. • Increase or decrease hood installation height to accommodate the fixed 6" or 12" duct cover heights. • Duct covers may be stacked, in various combinations, to reach ceiling heights. 60 32" Min. 38" Max. Ceiling Height to Floor Note: When determining the installation height, consideration must be given to the use of the warming shelf. Using duct cover accessories One or more duct cover accessories may be required for your hood installation height. Use this chart to determine the size and number of duct cover accessories required depending on the use of the supplied warming shelf. Installation height requirements Restaurant-style hoods These vent hoods must be installed 30" minimum to 36" maximum above the standard 36"-high cooking surface. When installed with the warming shelf, allow 32" minimum to 38" maximum clearance. The exact hood installation height is determined by the ceiling height. Duct Cover(s) 10" Hood Height Restaurant-style hoods without warming shelf installed Restaurant-style hoods with warming shelf installed Possible Possible Duct Duct Actual hood hood cover cover ceiling installation installation height height* 6" 12" height* 6" 12" 7' 11" 31" 1 1 37" 1 8' 0" 32" 1 1 32" 1 1 8' 0" 38" 1 8' 1" 33" 1 1 33" 1 1 8' 2" 34" 1 1 34" 1 1 8' 3" 35" 1 1 35" 1 1 8' 4" 30" 2 8' 4" 36" 1 1 36" 1 1 8' 5" 31" 2 37" 1 1 8' 6" 32" 2 32" 2 8' 6" 38" 1 1 8' 7" 33" 2 33" 2 8' 8" 34" 2 34" 2 8' 9" 35" 2 35" 2 8' 10" 30" 1 2 8' 10" 36" 2 36" 2 8' 11" 31" 1 2 37" 2 9' 0" 32" 1 2 32" 1 2 9' 0" 38" 2 9' 1" 33" 1 2 33" 1 2 9' 2" 34" 1 2 34" 1 2 9' 3" 35" 1 2 35" 1 2 9' 4" 30" 3 9' 4" 36" 1 2 36" 1 2 9' 5" 31" 3 37" 1 2 9' 6" 32" 3 32" 3 9' 6" 38" 1 2 9' 7" 33" 3 33" 3 9' 8" 34" 3 34" 3 9' 9" 35" 3 35" 3 9' 10" 30" 1 3 9' 10" 36" 3 36" 3 9' 11" 31" 1 3 37" 3 10' 0" 32" 1 3 32" 1 3 10' 0" 38" 3 *Based on 36" countertop height. Note: Additional duct covers may be used to reach higher ceilings. monogram.com Installation height requirements Using duct cover accessories Tapered- and straight-sided hoods These vent hoods must be installed 30" minimum to 36" maximum above the standard 36"-high cooking surface. The exact hood installation height is determined by the ceiling height. One or more duct cover accessories may be required for your hood installation height. Use this chart to determine the size, number or combination of duct cover accessories required. • Duct covers may be stacked, in various combinations, to reach ceiling heights. Duct Covers 18" Hood Height Ceiling Height to Floor Installation Height Professional hoods • Increase or decrease hood installation height to accommodate the fixed 6" or 12" duct cover heights. Tapered- or straight-sided Straight-sided hoods with hoods only standard with full-width duct cover duct cover Duct Duct Actual Possible hood cover cover ceiling installation height height* 6" 12" 6" 12" 7' 11" 35" 1 1 8' 0" 30" 1 1 8' 0" 36" 1 1 8' 1" 31" 1 1 8' 2" 32" 1 1 8' 3" 33" 1 1 8' 4" 34" 1 1 8' 5" 35" 1 1 8' 6" 30" 1 1 1 1 8' 6" 36" 1 1 8' 7" 31" 1 1 1 1 8' 8" 32" 1 1 1 1 8' 9" 33" 1 1 1 1 8' 10" 34" 1 1 1 1 8' 11" 35" 1 1 1 1 9' 0" 30" 2 2 9' 0" 36" 1 1 1 1 9' 1" 31" 2 2 9' 2" 32" 2 2 9' 3" 33" 2 2 9' 4" 34" 2 2 9' 5" 35" 2 2 9' 6" 30" 1 2 1 2 9' 6" 36" 2 2 9' 7" 31" 1 2 1 2 9' 8" 32" 1 2 1 2 9' 9" 33" 1 2 1 2 9' 10" 34" 1 2 1 2 9' 11" 35" 1 2 1 2 10' 0" 30" 3 3 10' 0" 36" 1 2 1 2 10' 1" 31" 3 3 10' 2" 32" 3 3 10' 3" 33" 3 3 10' 4" 34" 3 3 *Based on 36" countertop height. Note: Additional duct covers may be used to reach higher ceilings. Custom hood inser ts 2. Review the chart at right to determine the range of hood installation heights that can be accomplished with a 6" or 12" duct cover accessory. te l e s c o p i c d o w n d r a f t v e nt s 1. Measure the exact ceiling height. chimney hoods Advance planning for professional hoods The serial plate is located behind the removable filters. 61 Advance planning for professional island hoods Installation height requirements Using duct cover accessories These vent hoods must be installed 30" minimum to 36" maximum above the standard 36"-high cooking surface. The exact hood installation height is determined by the ceiling height. A duct cover accessory may be required for your hood installation height. Use this chart to accurately determine the need for a duct cover accessory. 20" for ZV42I 24" for ZV54I 30" Min. and 36" Max. Ceiling Height 36" to Countertop Accessory support frames with duct covers ZX42DC10—Optional accessory for ZV42I, for use with ceiling heights of 8'6" to 10'4". Kit includes telescoping support frames and duct covers. ZX54DC10—Optional accessory for ZV54I, for use with ceiling heights of 8'6" to 10'4". Kit includes telescoping support frames and duct covers. Accessory ZX42DC10 Supplied Duct Cover Possible Actual hood ceiling installation Duct cover height height* accessory 7' 11" 30" 8' 0" 31" 8' 1" 32" 8' 2" 33" 8' 3" 34" 8' 4" 35" 8' 5" 36" 8' 6" 30" to 31" 8' 7" 30" to 32" 8' 8" 30" to 33" 8' 9" 30" to 34" 8' 10" 30" to 35" 8' 11" 30" to 36" 9' 0" 30" to 36" 9' 1" 30" to 36" 9' 2" 30" to 36" 9' 3" 30" to 36" 9' 4" 30" to 36" 9' 5" 30" to 36" 9' 6" 30" to 36" 9' 7" 30" to 36" 9' 8" 30" to 36" 9' 9" 30" to 36" 9' 10" 30" to 36" 9' 11" 30" to 36" 10' 0" 30" to 36" 10' 1" 30" to 36" 10' 2" 30" to 36" 10' 3" 31" to 36" 10' 4" 32" to 36" *Based on 36" countertop height. ZV54 installation heights Possible hood installation height* 30" 31" 32" 33" 34" 35" 36" 30" 30" to 31" 30" to 32" 30" to 33" 30" to 34" 30" to 35" 30" to 36" 30" to 31" 30" to 32" 30" to 33" 30" to 34" 30" to 35" 30" to 36" 30" to 36" 30" to 36" 30" to 36" 30" to 36" 31" to 36" 32" to 36" 33" to 36" 34" to 36" 35" to 36" 36" Duct cover accessory The serial plate is located behind the removable filters. 62 Supplied 2. Review the chart at right to determine the range of hood installation heights that can be accomplished with or without an accessory kit. ZV42 installation heights Accessory ZX54DC10 1. Measure the exact ceiling height. Pairing hoods with cooking equipment Monogram® hoods are designed to perfectly coordinate with Monogram ranges and cooktops. To learn which cooking products can be combined with the hood you have selected, refer to the charts below. Wall-mounted ZV755SPSS ZV750SPSS ZV800SJSS ZV830SMSS ZV925SLSS Downdraft ZVB36STSS ZVB30STSS All non-pro cooktops All non-pro cooktops All 30" non-pro All non-pro cooktops cooktops All 30" and 36" cooktops and All non-pro ranges cooktops All 30" and 36" cooktops and All non-pro ranges cooktops All non-pro cooktops Chimney Chimney (slide-out) Chimney Chimney Chimney Chimney Chimney Chimney Telescopic downdraft 36" 36" 30" 36" 36" 36" 42" 36" 36"/30" 460 CFM 420 CFM 490 CFM 690 CFM 1040 CFM 490 CFM 390 CFM 7.0 220/2.0 9.0 190/2.0 8.0 230/2.0 6.0 330/1.3 10.0 450/2.5 8.0 230/2.0 10.5 170/2.5 8'–10' options 8'–12' options 8'–10' 5" options No 8'–10' 4" options No 8'–10' 1" options No 8' to 10' duct cover included; or undercabinet option 7'11" to 10' duct cover included; 10' to 12' duct cover optional 8' to 9' 5" duct cover included; 9' 6" to 10' 5" duct cover optional 8', 9' or 10' duct cover included; 10' to 14' duct cover optional 8' to 8' 7" duct cover included; 9' to 10' 1" duct cover optional 8'1" duct cover included, 8'2" or 10' duct cover optional 8' to 9' duct cover included; 9' 1" to 10' 1" duct Indoor remote cover optional blower option 6" round 8" round 8" round 8" round 6" round 8" round 8" round 3-1/4" x 10" rect. 100' 100' 100' 100' 100' 100' 100' 100' ZV900SLSS ZV950SDSS Island ZV855SPSS ZV850SPSS ZV1050SFSS Installation combinations Style Width High speed blower rating 490 CFM 350 CFM 10.0, 6.0 Sones 210/2.0, working speed 170/1.1 Recirculating option 8'–10' 8" options Vented duct cover options 8' to 9' 2" duct cover included; 9" to 10' 3" duct cover optional Duct size 6" round Equivalent duct length 100' Professional wall-mounted ZV48TSFSS ZV48SSFSS ZV36TSFSS ZV36SSFSS ZV30TSFSS ZV30SSFSS ZV48RSFSS ZV36RSFSS ZV30RSFSS All Monogram cooktops and ranges All Monogram cooktops and ranges Tapered 490 CFM 350 CFM 10.0, 6.0 210/2.0, 170/1.1 Professional island Wall or island hood inserts ZV30HSRSS ZV42ISHSS ZV54ISHSS ZVC36LSS Zvc30LSS ZVC48LSS ZVC42LSS All Monogram cooktops and ranges All Monogram 30" cooktops and ranges All 30" and 36" cooktops All Monogram cooktops and ranges All 30" and 36" cooktops and ranges All Monogram cooktops and ranges Straight Restaurant Wall-mounted/ undercabinet Tapered Tapered Insert Insert 48"/36"/30" 48"/36"/30" 48"/36"/30" 30" 42" 54" 36"/30" 48"/42" 1090/620/620 CFM 13.0, 9.0 430/2.5 240/1.1 1090/620/620 CFM 13.0, 9.0 430/2.5 240/1.1 1090/620/620 CFM 13.0, 9.0 430/2.5 240/1.1 530 CFM 1090 CFM 1090 CFM 640 CFM 1140 CFM 9.0 240/2.0 13.0 430/2.5 13.0 430/2.5 14.0 250/3.5 16.5 490/4.0 No No No Yes No No No No Optional 6" and 12" duct covers; stackable Optional 6" and 12" duct covers, standard or full-width; stackable Optional 6" and 12" duct covers, standard or full-width; stackable 7'11" to 8'5" duct 3-1/2 risers with cover included, 8'6" to 10'4" duct and without louvers included cover optional 7'11" to 8'5" duct cover included, 8'6" to 10'4" duct cover optional N/A N/A 10" round 10" round 10" round 8" round 10" round 10" round 8" round 8" round 150' 100' 150' 150' 100' 100' Installation combinations Style Width Blower rating Sones working speed Recirculating option Vented duct cover options Duct size Equivalent duct length 42 150' 150' Note: Cooktop or range not to exceed vent hood width chimney hoods monogram.com The Home Ventilating Institute (HVI) is a third-party certification organization focused on providing a fair and credible method of comparing ventilation performance of similar products. Many agencies such as Energy Star® and ASHRAE utilize HVI certification for performance assurance. All Monogram ventilation products are certified by HVI. professional hoods Some key performance criteria measured by HVI are sound level measured in sones, high speed and working speed measured in cubic feet per minute (cfm). A sone is an internationally recognized measurement of sound output. Sones translate decibel ratings into numbers that correspond to the way people sense loudness. The lower the sone number the quieter the sound. Working speed is defined as the speed that produces 100 cfm, or the lowest speed above 100 cfm that a hood can produce, when working on the same duct system as the maximum speed. te l e s c o p i c d o w n d r a f t v e nt s Custom hood inser ts (HVI916, March 1, 2009) (http://hvi.org/faqs.html) 43
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