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  5. 18 in 21"H-W 5.75"L Alu Wall Backdraft Dampr, 18-1/2 in x 18-1/2 in, Aluminum
Dayton 18 in 21"H-W 5.75"L Alu Wall Backdraft Dampr, 18-1/2 in x 18-1/2 in, Aluminum 1C744 - main

18 in 21"H-W 5.75"L Alu Wall Backdraft Dampr, 18-1/2 in x 18-1/2 in, Aluminum

  • Mfr # 1C744

  • Zoro # G0376747

product price:  $77.19
/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
2.043 sq ft
Shutter Opening Required
18-1/2 in x 18-1/2 in
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Specifications

Product Information

MFR #
1C744
Zoro #
G0376747
UPC #
190735131725
Country of Origin
United States

Dimensions

Shutter Overall Size
21 in x 21 in
Fits Fan Dia.
18 in
Flange Width
1 1/2 in
Mounting Hole Size
Prepunched
Frame Depth
2 1/2 in
Open Depth
5 3/4 in
Overall Height
21 in
Overall Width
21 in
Overall Length
5 3/4 in
Mounting Hole Diameter
1/4 in
Frame Opening Height
18 in
Rough Opening Length
18 1/2 in
Overall Diameter
21 in
Rough Opening Diameter
18 1/2 in
Frame Opening Width
18 in
Blade Material Thickness
26 ga
Frame Material Thickness
20 ga
Fits Fan Diameter
18 in
Rough Opening Width
18.5 in

Details

Item
21"H-W 5.75"L Alu 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
2.043 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
Shutter Item
Backdraft Damper / Wall Shutter
Number of Panels
1
Frame Opening B
18 in
For Use With
Vertical Mounted Exhaust Fans
Frame Opening A
18 in
Shutter Overall Square
21" x 21"
Includes
Prepunched Mounting Holes; Felt edged Counterbalanced Louvers; Weep Holes In Frame Bottom
Mounting Position
Vertical
Free Area
2 sq ft
Counterbalanced
Yes
Switch Action
Normally Closed
Frame Material
Galvanized Steel
Closure Type
Gravity
Frame Less Flange
18
Single Acting/Double Acting
Single Acting
Series
556
Flange Type
Rear Flange
Airflow Direction
Horizontal
Tie-Rod Material
Galvanized Steel Frame and Tie Rods
Closure Velocity Rating
2,500 fpm
Damper Type
Static
Rough Opening Shape
Square
Maximum Ambient Temperature
180 Degrees F
Damper Application
Backdraft
Blade Seal Material
Felt
Bushing Material
Stainless Steel
Blade Type
Flat Blade
Opening Type
Gravity
Blade Orientation
Parallel Blades
Maximum Pressure
1 in wc
Damper Finish
Mill Finish
Maximum Air Velocity
2500 fpm

Description

21 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, 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 20 ga, Overall Length 5 3/4 in, Connection Type Not Applicable, Frame Depth 2 1/2 in

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