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  9. Wall Backdraft Damper, Vertical, Wall, 18 1/2 in x 18 1/2 in
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Dayton

Wall Backdraft Damper, Vertical, Wall, 18 1/2 in x 18 1/2 in

product price: $56.75
/ea
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Key Features

  • Shutter Mounting Position Vertical
  • Shutter Mounting Location Wall
  • Shutter Construction Material G-90 Galvanized Steel Frame and Tie Rods
  • Shutter Free Area 2.051 sq ft
  • Shutter Opening Required 18-1/2 in x 18-1/2 in
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Product Information

Dimensions

Shutter Overall Size 21 in x 21 in
Fits Fan Dia. 18 in
Mounting Hole Size Prepunched
Open Depth 6 1/4 in
Frame Depth 2 1/4 in
Flange Width 1 1/2 in
Overall Length 6 in
Rough Opening Width 18.5 in
Rough Opening Diameter 18 1/2 in
Overall Height 21 in
Rough Opening Length 18 1/2 in
Overall Diameter 21 in
Overall Width 21 in
Mounting Hole Diameter 1/4 in
Fits Fan Diameter 18 in

Details

Item 21"H-W 6"L Aluminum Wall Backdraft Dampr
Shutter Mounting Position Vertical
Shutter Mounting Location Wall
Shutter Construction Material G-90 Galvanized Steel Frame and Tie Rods
Shutter Free Area 2.051 sq ft
Shutter Opening Required 18-1/2 in x 18-1/2 in
Blade Material Aluminum
Max. Velocity 2000 fpm
For Use With Vertical Mounted Exhaust Fans
Frame Opening A 18 in
Number of Panels 1
Shutter Overall Square 21" x 21"
Frame Opening B 18 in
Shutter Item Backdraft Damper / Wall Shutter
Includes Felted Louvers for Quiet Operation
Mounting Position Vertical
Free Area 2.1 sq ft
Single Acting/Double Acting Single Acting
Closure Velocity Rating 2,000 fpm
Closure Type Gravity
Blade Type Flat Blade
Counterbalanced No
Maximum Ambient Temperature 180 Degrees F
Airflow Direction Horizontal
Damper Application Backdraft
Damper Finish Mill Finish
Bushing Material Nylon; Stainless Steel
Rough Opening Shape Square
Switch Action Normally Closed
Frame Less Flange 18
Frame Material Galvanized Steel
Maximum Air Velocity 2000 fpm
Frame Material Thickness 20 ga
Flange Type Rear Flange
Maximum Pressure 1 in wc
Blade Orientation Parallel Blades
Opening Type Gravity
Damper Type Static
Blade Material Thickness 26 ga
Series 502
Blade Seal Material Felt
Tie-Rod Material Galvanized Steel Frame and Tie Rods

Description

21 In.H-W 6 In.L Aluminum Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 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 2.1 sq ft, Overall Width 21 in, Frame Material Thickness 20 ga, Overall Length 6 in, Connection Type Not Applicable, Frame Depth 2 1/4 in

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