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Backdraft Damper, Horizontal, 33-3/4Sq

  • Mfr # 3HHL9
  • Zoro # G1145216
product price: 
$
152.99
/ea
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Key Features

Type
No Flange, Horizontal Mount
Damper Size (In.)
33-3/4 x 33-3/4
Overall Size (In.)
33 3/4 x 33 3/4
Max. Velocity (FPM)
2,000 fpm
Construction Material
G-90 Galvanized Steel Frame and Aluminum Blades
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Specifications

Details

MFR #
3HHL9
Zoro #
G1145216
UPC #
190735289563
Country of Origin
United States
Item
33.75"H-W 4.5"L Aluminum Backdraft Dampr
Type
No Flange, Horizontal Mount
Max. Velocity (FPM)
2,000 fpm
Construction Material
G-90 Galvanized Steel Frame and Aluminum Blades
Outside Flange (In.)
33-3/4 x 33-3/4
Includes
Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Opening Type
Spring
Blade Type
Flat Blade
Blade Seal Material
Felt
Damper Type
Dynamic
Switch Action
Normally Closed
For Duct Shape
Square
Blade Orientation
Parallel Blades
Blade Material
Aluminum
Bushing Material
Nylon
Closure Velocity Rating
2,000 fpm
Frame Less Flange
33 3/4
Maximum Air Velocity
2250 fpm
Number of Panels
1
Rough Opening Shape
Square
Single Acting/Double Acting
Single Acting
Minimum Ambient Temperature
-40 Degrees F
Counterbalanced
Yes
Damper Finish
Mill Finish
Airflow Direction
Horizontal; Vertical
Flange Type
None
Mounting Position
Horizontal; Vertical
Frame Material
Galvanized Steel
Series
611
Damper Application
Backdraft
Closure Type
Spring
Free Area
7.7 sq ft
Maximum Ambient Temperature
180 Degrees F
Maximum Pressure
1 in wc
Includes Motor
No
Front Closure
Spring

Description

33.75 In.H-W 4.5 In.L Aluminum Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 34 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 33 3/4 in, Rough Opening Diameter 34 in, Rough Opening Shape Square, Fits Fan Diameter 34 in, For Duct Shape Square, Free Area 7.7 sq ft, Overall Width 33 3/4 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 34 in, Maximum Pressure 1 in wc

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