This GMD-SP series control damper includes motor, and is made of steel. It measures 33 inch width, 33 inch height, 13¼ inch length. This control damper has one phase, 50/60 Hz, and 33 inch diameter, and 3 Amps.
Technical Specs
ItemControl Damper
Number of Panels1
Overall Length13 1/4 in
For Duct ShapeSquare
Frame Material Thickness14 ga
Maximum Air Pressure4 in wg
Rough Opening Length31 in
Damper TypeDynamic
Nameplate Voltage100/240V AC
Closure Pressure Rating4 in wc
Closure Velocity Rating3,500 fpm
CounterbalancedNot Counterbalanced
Mounting PositionHorizontal, Vertical
Pressure Drop @ 1000 fpm (AMCA 5.2)0.17 in wg
Frame Less Flange30 sq in
Jamb Seal MaterialStainless Steel
StandardsNEC, OSHA
Maximum Temperature Rating122 Degrees F
Full Load Current3 A
Bushing MaterialBrass
Damper FinishPlain
Frame MaterialSteel
Frequency50/60 Hz
Damper ApplicationMotorized
Overall Height33 in
Rough Opening ShapeSquare
Overall Width33 in
Blade MaterialGalvanized Steel
Overall Diameter33 in
Rough Opening Width31 in
Maximum Air Velocity3,500 fpm
Rough Opening Diameter31 in
Blade OrientationParallel Blades
Blade TypeFlat Blade
Free Area5.7 sq ft
Switch ActionNormally Open
Flange TypeReversed Flange
Flange Width1 1/2 in
Airflow DirectionHorizontal, Vertical
Phase1
Includes MotorMotor Included
Axle MaterialPlated Steel
Blade Material Thickness16 ga
SeriesGMD-SP
Motor Bracket Extension10 1/4 in
Country of OriginUnited States
(subject to change)