- Country of Origin:
- United States
- Item:
- 23.75H-W 4.5"L Alu Univ Backdraft Dampr"
- Type:
- No Flange, Horizontal or Vertical Mount
- Damper Size (In.):
- 23-3/4 x 23-3/4
- Overall Size (In.):
- 23-3/4 x 23-3/4
- Outside Flange (In.):
- 23-3/4 x 23-3/4
- Max. Velocity (FPM):
- 2,000 fpm
- Includes:
- Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
- Construction Material:
- G-90 Galvanized Steel Frame and Aluminum Blades
- Overall Length:
- 4 1/2 in
- Overall Height:
- 23 3/4 in
- Overall Width:
- 23 3/4 in
- Blade Orientation:
- Parallel Blades
- Rough Opening Width:
- 24 in
- ACMA Leakage Class:
- Not Applicable
- Blade Seal Material:
- Felt
- For Fuel Type:
- Not Applicable
- Damper Application:
- Backdraft
- For Duct Shape:
- Square
- Opening Type:
- Motorized
- Damper Finish:
- Mill Finish
- Switch Action:
- Normally Closed
- Counterbalanced:
- No
- Overall Diameter:
- Not Applicable
- Damper Type:
- Dynamic
- Minimum Ambient Temperature:
- -40 Degrees F
- Fusible Link Temperature:
- Not Applicable
- Free Area:
- 3.6 sq ft
- Seal Material:
- Not Applicable
- Airflow Direction:
- Horizontal; Vertical
- Frame Material:
- Galvanized Steel
- Frame Material Thickness:
- 20 ga
- Flange Type:
- None
- Pressure Drop @ 1000 fpm (AMCA 5.2):
- Not Applicable
- Maximum Ambient Temperature:
- 180 Degrees F
- Closure Type:
- Gravity
- Maximum Pressure:
- 1 in wc
- Number of Panels:
- 1
- Closure Velocity Rating:
- 2,000 fpm
- Blade Material:
- Aluminum
- Single Acting/Double Acting:
- Single Acting
- Rough Opening Shape:
- Square
- For Nominal Duct Diameter:
- 24 in
- Bushing Material:
- Nylon
- Fits Fan Diameter:
- 24 in
- Mounting Position:
- Horizontal; Vertical
- Blade Material Thickness:
- 26 ga
- Flange Width:
- Not Applicable
- Frame Less Flange:
- 23 3/4
- Frame Depth:
- 2 in
- Rough Opening Diameter:
- 24 in
- Maximum Air Velocity:
- 2000 fpm
- Series:
- 411
- Rough Opening Length:
- 24 in
- Blade Type:
- Flat Blade
- Package Quantity:
- 1