This manual damper includes stainless steel closure spring, UL fusible link, is made of galvanized steel, and it measures 18 inch width, 18 inch height, 3¾ inch length. This manual damper is wall mountable.
Technical Specs
ItemManual Damper
Frame MaterialGalvanized Steel
Maximum Air Velocity4,000 fpm
Rough Opening ShapeSquare
Free Area1.6 sq ft
Frame Material Thickness22 ga
Frame Depth3 3/4 in
Rough Opening Width18 in
Damper TypeDynamic
Maximum Ambient Temperature165 Degrees F
Closure Pressure Rating4 in wc
Frame Less Flange324 sq in
IncludesStainless Steel Closure Spring, UL Fusible Link
Fusible Link Temperature165 Degrees F
StandardsNFPA 90A,101, CSFM, IBC, NFPA 80, NYC MEA, UL 555
Damper ApplicationFire
Number of Panels1
Overall Height18 in
For Duct ShapeSquare
Overall Width18 in
Overall Length3 3/4 in
Maximum Pressure4 in wc
Blade MaterialGalvanized Steel
Blade TypeCurtain
Closure TypeSpring
Closure Velocity Rating2,000 fpm
Switch ActionNormally Open
Mounting LocationWall
Airflow DirectionHorizontal
Mounting PositionHorizontal, Vertical
Country of OriginUnited States
(subject to change)