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Wall Backdraft Damper, Vertical Mount, 18 in Dia Fan, 21 in H x 21 in W x 6-1/4 in D, 2000 fpm

  • Mfr # 2C521

  • Zoro # G2830737

product price:  $59.19
/ea

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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Specifications

Product Information

MFR #
2C521
Zoro #
G2830737
UPC #
190735216965
Country of Origin
United States

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
Frame Material Thickness
20 ga
Rough Opening Length
18 1/2 in
Overall Diameter
21 in
Overall Width
21 in
Blade Material Thickness
26 ga
Mounting Hole Diameter
1/4 in
Fits Fan Diameter
18 in
Wire Rope Length
6 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
Type
Gravity Operated, Single Panel
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
Flange Type
Rear Flange
Maximum Pressure
1 in wc
Blade Orientation
Parallel Blades
Opening Type
Gravity
Damper Type
Static
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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