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Damper, Backdraft

  • Mfr # 4HX77

  • Zoro # G1225524

product price:  $73.59
/ea

Key Features

Type
Wall Mount, Supply
Damper Size (In.)
15 x 15
Overall Size (In.)
17-3/4 x 17-3/4
Flange Width (In.)
1 3/8 in
Construction Material
16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware
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Specifications

Product Information

MFR #
4HX77
Zoro #
G1225524
UPC #
190735326015
Country of Origin
United States

Dimensions

Damper Size (In.)
15 x 15
Overall Size (In.)
17-3/4 x 17-3/4
Flange Width (In.)
1 3/8 in
Overall Height
17 3/4 in
Flange Width
1 1/2 in
Fits Fan Diameter
12 in
Rough Opening Length
14 1/2 in
Frame Material Thickness
0.1 in
Frame Depth
1 5/8 in
Rough Opening Diameter
15 1/2 in
Overall Length
4 1/2 in
Blade Material Thickness
26 ga
Overall Width
17 3/4 in
Rough Opening Width
15.5 in
Wire Rope Length
4 1/2 in

Details

Item
17.75"H-W 4.5"L Aluminum Backdraft Dampr
Type
Wall Mount, Supply
Construction Material
16-gauge Extruded Aluminum Frame, Aluminum Blades, Galvanized Steel Tie Rods and Stainless Steel Hardware
Outside Flange (In.)
17-3/4 x 17-3/4
Use w/Dayton Ventilators
4HZ58, 4HZ59
Max. Velocity (FPM)
2,000 fpm
Includes
Felted Edges for Quiet Operation
Single Acting/Double Acting
Single Acting
Blade Type
Flat Blade
Tie-Rod Material
Galvanized Steel Frame and Tie Rods
For Duct Shape
Square
Damper Finish
Mill Finish
Counterbalanced
Yes
Blade Orientation
Parallel Blades
Maximum Ambient Temperature
180 Degrees F
Maximum Air Velocity
2250 fpm
Blade Seal Material
Felt
Frame Less Flange
15
Closure Velocity Rating
2,250 fpm
Airflow Direction
Horizontal; Vertical
Number of Panels
1
Flange Type
Front Flange
Bushing Material
Stainless Steel
Closure Type
Gravity
Blade Material
Aluminum
Maximum Pressure
1 in wc
Minimum Ambient Temperature
-40 Degrees F
Damper Type
Static
Frame Material
Aluminum
Opening Type
Spring
Series
CWV
Mounting Position
Vertical
Rough Opening Shape
Square
Free Area
1.2 sq ft
Damper Application
Backdraft
Switch Action
Normally Closed

Description

17.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 17 3/4 in, Rough Opening Diameter 15 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 12 in, For Duct Shape Square, Free Area 1.2 sq ft, Overall Width 17 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in

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