Blade
- Material:
- Aluminum 6063
- Dimension:
- 4 in / 100 mm & 3.5 in / 80 mm
- Treatment:
- T5
- Finish:
- Mill
Dampers
Our Backdraft Gravity Dampers use the same perimeter frame and as our Standard Dampers which simplifies production planning and maintains the expectation of durability and high quality. All aluminum construction with fiberglass reinforced nylon hardware that is housed internally. No failure due to…

Enter the clear air opening height and width, rather than outside frame dimensions. Add a row for each size.
DraftMATE sizing tool
Enter product dimensions and generate a drawing before you request a quote.
Size Your DamperOr call 713-538-2050 · Mon–Fri 7am–4pm CT

Our Backdraft Gravity Dampers use the same perimeter frame and as our Standard Dampers which simplifies production planning and maintains the expectation of durability and high quality. All aluminum construction with fiberglass reinforced nylon hardware that is housed internally. No failure due to rust, corrosion, or debris accumulation. AMCA Certified
The parts that make up the Backdraft Damper.
Nominal 5 in wide, U-shape
*Optional flame retardant V-5