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Backdraft Damper, Vert/Horiz Mtg, 7 3/4 Sq

  • Mfr # 3HHL4

  • Zoro # G1070255

product price: 
$
34.89
/ea

Key Features

Type
No Flange, Horizontal or Vertical Mount
Damper Size (In.)
7-3/4 x 7-3/4
Overall Size (In.)
7-3/4 x 7-3/4
Construction Material
G-90 Galvanized Steel Frame and Aluminum Blades
Outside Flange (In.)
7-3/4 x 7-3/4
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Specifications

Details

MFR #
3HHL4
Zoro #
G1070255
UPC #
190735289518
Country of Origin
United States
Item
7.75"H-W 4.5"L Aluminum Backdraft Damper
Type
No Flange, Horizontal or Vertical Mount
Construction Material
G-90 Galvanized Steel Frame and Aluminum Blades
Outside Flange (In.)
7-3/4 x 7-3/4
Max. Velocity (FPM)
2,000 fpm
Includes
Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Frame Less Flange
7 3/4
Free Area
0.3 sq ft
Mounting Position
Horizontal; Vertical
Minimum Ambient Temperature
-40 Degrees F
Damper Finish
Mill Finish
Bushing Material
Nylon
Damper Type
Dynamic
Closure Velocity Rating
2,000 fpm
Frame Material
Galvanized Steel
Blade Material
Aluminum
Blade Seal Material
Felt
Counterbalanced
No
Blade Type
Flat Blade
For Duct Shape
Square
Damper Application
Backdraft
Rough Opening Shape
Square
Closure Type
Spring
Maximum Pressure
1 in wc
Series
411
Blade Orientation
Parallel Blades
Maximum Ambient Temperature
180 Degrees F
Maximum Air Velocity
2000 fpm
Number of Panels
1
Flange Type
None
Switch Action
Normally Closed
Opening Type
Spring
Single Acting/Double Acting
Single Acting
Airflow Direction
Horizontal; Vertical
Includes Motor
No

Description

7.75 In.H-W 4.5 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter 8 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 7 3/4 in, Rough Opening Diameter 8 in, Rough Opening Shape Square, Fits Fan Diameter 8 in, For Duct Shape Square, Free Area 0.3 sq ft, Overall Width 7 3/4 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 8 in, Maximum Pressure 1 in wc

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