This manual damper includes stainless steel closure spring, UL fusible link, is made of galvanized steel, and it measures 11¾ inch width, 11¾ 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 Area0.6 sq ft
Frame Material Thickness22 ga
Frame Depth3 3/4 in
Rough Opening Width12 in
Damper TypeDynamic
Maximum Ambient Temperature165 Degrees F
Closure Pressure Rating4 in wc
Frame Less Flange144 sq in
IncludesStainless Steel Closure Spring, UL Fusible Link
Fusible Link Temperature165 Degrees F
Airflow DirectionHorizontal
Mounting PositionHorizontal, Vertical
Damper ApplicationFire
Number of Panels1
Overall Height11 3/4 in
For Duct ShapeSquare
Overall Width11 3/4 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
Pressure Drop @ 1000 fpm (AMCA 5.2)0.11 in wg
StandardsNFPA 90A,101, CSFM, IBC, NFPA 80, NYC MEA, UL 555
Country of OriginUnited States
(subject to change)