Actual appearance may vary to that shown above.

Backdraft Dampers

Heavy gauge galvanized steel one-way airflow ducting. Prevents air leakage from your shop while system is not in use. Raw (uncrimped) on both ends. Not an explosion isolation device.
As low as $470.46

The Backdraft Damper will help prevent leakage of conditioned air into/out of your shop. Any draft that attempts to enter from your dust collector and back into the ductwork and/or your shop will be stopped by the one-way airflow gate within the damper.

Upon powering on your dust collector the system's high air velocity will lift the gate allowing air to flow into the system unimpeded. When you are done using your system gravity will automatically pull the gate closed.

Hand-crafted from galvanized steel the Backdraft Damper attaches at or near your system's inlet and has virtually no impact on your system's CFM.

Back Draft Guard Air Flow Diagram
Ductwork TypeStandard
Connection TypeFemale
Primary Build MaterialsGalvanized Steel
Thickness18 Gauge
WeldingSpot Welded
Static Resistance RatingConductive (Metal)
Country of ManufactureUnited States
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Frequently Asked Questions
What's the best way to apply foil tape on ductwork?

We've heard from many customers who've had great success using a simple Wallpaper Roller to smooth out their foil tape, giving a very smooth, clean look on your ducting. The roller helps smooth out air bubbles and crinkled marks while making it easier to get those hard to reach places on hanging ductwork.

We do not carry this product but it can be found easily at your local hardware store or home renovation outlet.

  California Residents: Please visit for information regarding Proposition 65 for our products.

Oneida Air Systems (OAS) is not responsible for typographical errors, omissions, or other clerical errors that may occur and makes every effort to provide the most detailed and accurate information available regarding our products. If you encounter incorrect information, please contact us. OAS reserves the right to restrict quantities and correct prices when necessary.