customer-service Help
  1. Home
  2. /
  3. Heating & Cooling
  4. /
  5. Ventilation
  6. /
  7. Dampers
  8. /
  9. Backdraft Roof Dampers
  10. /
  11. Backdraft Damper, Vert/Horiz Mtg, 7 3/4 Sq
Shop All Backdraft Roof Dampers
Dayton

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

product price: $30.39
/ea
Free Shipping on orders over $50
Free 30-Day Returns

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
See all product information

Product Information

Dimensions

Damper Size (In.) 7-3/4 x 7-3/4
Overall Size (In.) 7-3/4 x 7-3/4
Overall Length 4 1/2 in
Overall Height 7 3/4 in
Overall Width 7 3/4 in
For Nominal Duct Diameter 8 in
Frame Depth 2 in
Rough Opening Width 8 in
Rough Opening Diameter 8 in
Rough Opening Length 8 in
Fits Fan Diameter 8 in

Details

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
Frame Material Thickness 20 ga
Switch Action Normally Closed
Opening Type Motorized
Single Acting/Double Acting Single Acting
Blade Material Thickness 26 ga
Airflow Direction Horizontal; Vertical

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

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.

Explore More Products