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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: 
$
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

Details

MFR #
3HHN7
Zoro #
G1174433
UPC #
190735289631
Country of Origin
United States
Item
21"H-W 5 1/4"L Aluminum Backdraft Damper
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
Blade Material
Aluminum
Max. Velocity
2500 FPM
Type
Gravity Operated, Single Panel
Number of Panels
1
Shutter Item
Backdraft Damper / Wall Shutter, Front Flange
For Use With
Vertical Mounted Exhaust Fans
Shutter Overall Square
21" x 21"
Frame Opening B
18 in
Frame Opening A
18 in
Includes
Prepunched Mounting Holes; Felt edged Counterbalanced Louvers; Weep Holes In Frame Bottom
Mounting Position
Vertical
Free Area
2 sq ft
Frame Material
Aluminum
Damper Type
Static
Bushing Material
Stainless Steel
Counterbalanced
Yes
Closure Type
Gravity
Frame Less Flange
18
Maximum Ambient Temperature
180 Degrees F
Rough Opening Shape
Square
Blade Type
Flat Blade
Damper Application
Backdraft
Tie-Rod Material
Galvanized Steel Frame and Tie Rods
Opening Type
Gravity
Blade Orientation
Parallel Blades
Closure Velocity Rating
2,500 fpm
Flange Type
Front Flange
Minimum Ambient Temperature
-40 Degrees F
Blade Seal Material
Felt
Airflow Direction
Horizontal
Maximum Air Velocity
2500 fpm
Damper Finish
Mill Finish
Single Acting/Double Acting
Single Acting
Switch Action
Normally Closed
Series
EASR
Maximum Pressure
1 in wc

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

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