Backdraft Damper, Vert/Horiz Mtg, 7 3/4 Sq - 3HHL4

Backdraft Damper, Vert/Horiz Mtg, 7 3/4 Sq - 3HHL4

Dayton
SKU:
3HHL4
|
UPC:
190735289518
Availability:
In Stock

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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
Additional Information
Country of Origin:
United States
Item:
7.75H-W 4.5"L Aluminum Backdraft Damper"
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
Max. Velocity (FPM):
2,000 fpm
Includes:
Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Overall Length:
4 1/2 in
Overall Height:
7 3/4 in
Overall Width:
7 3/4 in
For Fuel Type:
Not Applicable
Frame Less Flange:
7 3/4
Pressure Drop @ 1000 fpm (AMCA 5.2):
Not Applicable
For Nominal Duct Diameter:
8 in
Free Area:
0.3 sq ft
Overall Diameter:
Not Applicable
Mounting Position:
Horizontal; Vertical
Minimum Ambient Temperature:
-40 Degrees F
Damper Finish:
Mill Finish
ACMA Leakage Class:
Not Applicable
Bushing Material:
Nylon
Damper Type:
Dynamic
Closure Velocity Rating:
2,000 fpm
Frame Material:
Galvanized Steel
Blade Material:
Aluminum
Blade Seal Material:
Felt
Frame Depth:
2 in
Counterbalanced:
No
Blade Type:
Flat Blade
For Duct Shape:
Square
Damper Application:
Backdraft
Rough Opening Shape:
Square
Rough Opening Width:
8 in
Closure Type:
Spring
Maximum Pressure:
1 in wc
Series:
411
Rough Opening Diameter:
8 in
Blade Orientation:
Parallel Blades
Maximum Ambient Temperature:
180 Degrees F
Maximum Air Velocity:
2000 fpm
Number of Panels:
1
Flange Width:
Not Applicable
Fusible Link Temperature:
Not Applicable
Flange Type:
None
Frame Material Thickness:
20 ga
Seal Material:
Not Applicable
Switch Action:
Normally Closed
Opening Type:
Motorized
Single Acting/Double Acting:
Single Acting
Rough Opening Length:
8 in
Fits Fan Diameter:
8 in
Blade Material Thickness:
26 ga
Airflow Direction:
Horizontal; Vertical
Package Quantity:
1
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