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, 19 3/4Sq
Shop All Backdraft Roof Dampers
Dayton

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

product price: $61.45
/ea
Free Shipping on orders over $50
Free 30-Day Returns

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
See all product information

Product Information

Dimensions

Damper Size (In.) 19-3/4 x 19-3/4
Overall Size (In.) 19-3/4 x 19-3/4
Overall Height 19 3/4 in
Overall Width 19 3/4 in
Overall Length 4 1/2 in
Rough Opening Diameter 20 in
Rough Opening Width 20 in
Frame Depth 2 in
For Nominal Duct Diameter 20 in
Fits Fan Diameter 20 in
Rough Opening Length 20 in

Details

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 Motorized
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
Blade Material Thickness 26 ga
Frame Material Thickness 20 ga
Single Acting/Double Acting Single Acting
Maximum Ambient Temperature 180 Degrees F

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

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