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18 in 21"H-W 5 1/4"L Aluminum Backdraft Damper, 18-1/2 in x 18-1/2 in, Aluminum
Mfr # 3HHN7
Zoro # G1174433
product price:Â
$
95.15
/ea
Key Features
Shutter Mounting Position
Vertical
Shutter Mounting Location
Wall
Shutter Construction Material
Extruded Aluminum Frame and Galvanized Tie Rods
Shutter Free Area
2.043 sq ft
Shutter Opening Required
18-1/2 in x 18-1/2 in
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Specifications
Product Information
- MFR #
- 3HHN7
- Zoro #
- G1174433
- UPC #
- 190735289631
- Country of Origin
- United States
Dimensions
- Shutter Overall Size
- 21 in x 21 in
- Fits Fan Dia.
- 18 in
- Frame Depth
- 3 in
- Open Depth
- 5 3/4 in
- Mounting Hole Size
- Prepunched
- Flange Width
- 1 1/2 in
- Frame Opening Width
- 18 in
- Frame Opening Height
- 18 in
- Overall Length
- 5 1/4 in
- Overall Height
- 21 in
- Frame Material Thickness
- 0.8 in
- Overall Width
- 21 in
- Rough Opening Width
- 18.5 in
- Blade Material Thickness
- 26 ga
- Mounting Hole Diameter
- 1/4 in
- Rough Opening Length
- 18 1/2 in
- Overall Diameter
- 21 in
- Fits Fan Diameter
- 18 in
- Rough Opening Diameter
- 18 1/2 in
- Wire Rope Length
- 5 1/4 in
- Length
- 5 1/4 in
Description
21 In.H-W 5 1/4 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 21 in, Rough Opening Diameter 18 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 18 in, For Duct Shape Not Applicable, Free Area 2 sq ft, Overall Width 21 in, Frame Material Thickness 0.8 in, Overall Length 5 1/4 in, Connection Type Not Applicable, Frame Depth 3 in