Damper, Backdraft - 4HX74
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Dayton
Damper, Backdraft - 4HX74
14.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 14 3/4 in, Rough Opening Diameter 12 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 12 in, For Duct Shape Square, Free Area 0.7 sq ft, Overall Width 14 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in
- Country of Origin:
- United States
- Item:
- 14.75H-W 4.5"L Aluminum Backdraft Dampr"
- Type:
- Wall Mount, Supply
- Damper Size (In.):
- 12 x 12
- Overall Size (In.):
- 14-3/4 x 14-3/4
- Includes:
- Felted Edges for Quiet Operation
- Outside Flange (In.):
- 14-3/4 x 14-3/4
- Flange Width (In.):
- 1 3/8 in
- Max. Velocity (FPM):
- 2,000 fpm
- Use w/Dayton Ventilators:
- 4HZ46, 4HZ47
- Construction Material:
- 16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware
- Switch Action:
- Normally Closed
- Blade Material Thickness:
- 26 ga
- Flange Type:
- Front Flange
- Rough Opening Length:
- 11 1/2 in
- Minimum Ambient Temperature:
- -40 Degrees F
- Blade Type:
- Flat Blade
- Closure Velocity Rating:
- 2,250 fpm
- Damper Type:
- Static
- Damper Application:
- Backdraft
- Overall Length:
- 4 1/2 in
- For Fuel Type:
- Not Applicable
- Counterbalanced:
- Yes
- Maximum Ambient Temperature:
- 180 Degrees F
- Blade Material:
- Aluminum
- Seal Material:
- Not Applicable
- Blade Seal Material:
- Felt
- Mounting Position:
- Vertical
- Series:
- CWV
- Flange Width:
- 1 1/2 in
- Number of Panels:
- 1
- Opening Type:
- Spring
- Closure Type:
- Gravity
- Rough Opening Shape:
- Square
- Overall Diameter:
- Not Applicable
- Airflow Direction:
- Horizontal; Vertical
- Maximum Pressure:
- 1 in wc
- Single Acting/Double Acting:
- Single Acting
- Tie-Rod Material:
- Galvanized Steel Frame and Tie Rods
- Free Area:
- 0.7 sq ft
- For Nominal Duct Diameter:
- Not Applicable
- Rough Opening Width:
- 12.5 in
- Connection Type:
- Not Applicable
- Pressure Drop @ 1000 fpm (AMCA 5.2):
- Not Applicable
- Fits Fan Diameter:
- 12 in
- Maximum Air Velocity:
- 2250 fpm
- Frame Material:
- Aluminum
- Fusible Link Temperature:
- Not Applicable
- Frame Material Thickness:
- 0.1 in
- Frame Depth:
- 1 5/8 in
- ACMA Leakage Class:
- Not Applicable
- Blade Orientation:
- Parallel Blades
- For Duct Shape:
- Square
- Damper Finish:
- Mill Finish
- Frame Less Flange:
- 12
- Rough Opening Diameter:
- 12 1/2 in
- Overall Width:
- 14 3/4 in
- Overall Height:
- 14 3/4 in
- Bushing Material:
- Stainless Steel
- Package Quantity:
- 1
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12 in Backdraft Damper / Wall Shutter, Front Flange - 3HHN5
Manufacturer: Dayton
MFR # 3HHN5
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