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Dayton

Damper, Roof Mount

product price: $132.99
/ea
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Key Features

  • Type Roof Mount, Exhaust
  • Damper Size (In.) 35 x 35
  • Overall Size (In.) 37 x 37
  • Includes Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
  • Flange Width (In.) 1 in
See all product information

Product Information

Dimensions

Damper Size (In.) 35 x 35
Overall Size (In.) 37 x 37
Flange Width (In.) 1 in
Overall Width 37 in
Overall Length 4 1/2 in
Overall Height 37 in
Rough Opening Length 34 1/2 in
Flange Width 1 in
Rough Opening Width 35.5 in
Fits Fan Diameter 36 in
Frame Depth 2 in
Rough Opening Diameter 35 1/2 in

Details

Item 37"H-W 4.5"L Aluminum Backdraft Damper
Type Roof Mount, Exhaust
Includes Pre-Punched Conduit Hole Knock-Out; Felted Edges for Quiet Operation
Construction Material Aluminum Blades, G-90 Galvanized Steel Frame, Nylon Bushings and Galvanized Steel Tie Rods., Stainless Steel Pivot Pins
Outside Flange (In.) 37 x 37
Use w/Dayton Ventilators 4HX88, 4HX99
Max. Velocity (FPM) 2,250 fpm
Damper Type Static
Flange Type Rear Flange
Frame Less Flange 35
Switch Action Normally Closed
For Duct Shape Square
Mounting Position Horizontal
Frame Material Galvanized Steel
Single Acting/Double Acting Single Acting
Free Area 7.1 sq ft
Rough Opening Shape Square
Frame Material Thickness 20 ga
Counterbalanced Yes
Number of Panels 1
Bushing Material Nylon
Maximum Pressure 1 in wc
Closure Velocity Rating 2,250 fpm
Airflow Direction Vertical
Blade Type Flat Blade
Blade Orientation Parallel Blades
Maximum Ambient Temperature 180 Degrees F
Blade Seal Material Felt
Damper Application Backdraft
Blade Material Aluminum
Maximum Air Velocity 2250 fpm
Closure Type Gravity

Description

37 In.H-W 4.5 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 37 in, Rough Opening Diameter 35 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 36 in, For Duct Shape Square, Free Area 7.1 sq ft, Overall Width 37 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 34 1/2 in

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