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(972)633-8104

(972)633-8973

 Free Standard Shipping on Orders $25+ Continental USA only

  Free Standard Shipping: Enjoy free standard shipping on orders of $25 or more within the continental United States.

Alaska, Hawaii, & Canada: Shipping to Alaska, Hawaii, and international shipping to Canada will incur additional freight charges.

Oversized Item Notice (CA & WA): Due to carrier surcharges, shipping 16” and 18” round dampers to California (CA) and Washington (WA) will incur an additional $10.00 shipping fee.

Please Note: For orders requiring additional shipping charges, please go ahead and place your order online.

DDRD Series 

Round Barometric Relief Dampers






Available Sizes: 8”, 10", 12", 14", 16” Diameter

DDRD Series Round Barometric Relief Dampers, Pressure relief damper, barometric damper, hvac, air conditioning supplies, RetroZone

Our most popular relief dampers due to low cost and ease of installation. 

The DDRD Series barometric relief damper comes installed in a round sheet metal enclosure similar to a motorized damper. 

This relief damper features an adjustable, weighted arm used to increase and decrease air flow resistance. A 12" barometric relief will handle up to a 5 ton unit. Our unit features a longer arm than most for better airflow adjustment. 

Extra weights are available. 

Use flexible or rigid duct with starting collars for easy installation.

Application: Residential and light commercial zoning systems 5 ton and under.

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