Backdraft dampers are non-flanged horizontal mount exhaust backdraft damper. The frame is galvanized steel with aluminum blades. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather.
- Spring assisted to allow the blades to open quickly
- Ideal for use in roof curbs, ductwork, or wall collars when using a fan or power roof ventilator
- Recommended for horizontal mount exhaust applications
Made in the usaWeights & dimensions
- Depth 2 in
- Max pressure in w.G. 1 in
- Rough opening 18 x 18 in
- Width 17-3/4 in
- Diameter 18 in
- Max velocity 2000 ft/min
- Free area 1.71 ft³
- Height 17-3/4 in
- Weight 4.5 lbs
Product details
- Number of panels 1
- Mounting location Horizontal
- Type Backdraft
- For use with Power roof ventilators
- Brand Air conditioning products
- Warranty 1 yr
- Material Aluminum/galvanized steel
- Manufacturers part number 411-std 18
