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Backdraft Damper, Vert/Horiz Mtg, 19 3/4Sq

  • Mfr # 3HHL6

  • Zoro # G0541581

product price: 
$
70.15
/ea

Key Features

Type
No Flange, Horizontal or Vertical Mount
Damper Size (In.)
19-3/4 x 19-3/4
Overall Size (In.)
19-3/4 x 19-3/4
Includes
Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Max. Velocity (FPM)
2,000 fpm
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Specifications

Details

MFR #
3HHL6
Zoro #
G0541581
UPC #
190735289532
Country of Origin
United States
Item
19.8"H-W 4.5"L Alu Spring Bkdrft Dampr
Type
No Flange, Horizontal or Vertical Mount
Includes
Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Max. Velocity (FPM)
2,000 fpm
Construction Material
G-90 Galvanized Steel Frame and Aluminum Blades
Outside Flange (In.)
19-3/4 x 19-3/4
Bushing Material
Nylon
Damper Finish
Mill Finish
Opening Type
Spring
Frame Material
Galvanized Steel
Switch Action
Normally Closed
Rough Opening Shape
Square
Closure Velocity Rating
2,000 fpm
Blade Seal Material
Felt
Blade Type
Flat Blade
For Duct Shape
Square
Number of Panels
1
Series
411
Damper Type
Dynamic
Maximum Air Velocity
2000 fpm
Maximum Pressure
1 in wc
Frame Less Flange
19 3/4
Closure Type
Spring
Minimum Ambient Temperature
-40 Degrees F
Counterbalanced
No
Mounting Position
Horizontal; Vertical
Airflow Direction
Horizontal; Vertical
Damper Application
Backdraft
Blade Orientation
Parallel Blades
Flange Type
None
Free Area
2.5 sq ft
Blade Material
Aluminum
Single Acting/Double Acting
Single Acting
Maximum Ambient Temperature
180 Degrees F
Includes Motor
No

Description

19.8 In.H-W 4.5 In.L Alu Spring Bkdrft Dampr, Damper Application Backdraft, For Nominal Duct Diameter 20 in, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 19 3/4 in, Rough Opening Diameter 20 in, Rough Opening Shape Square, Fits Fan Diameter 20 in, For Duct Shape Square, Free Area 2.5 sq ft, Overall Width 19 3/4 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 20 in, Maximum Pressure 1 in wc

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