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  Shipping to Alaska, Hawaii, and International shipping to Canada extra. Please place the order and factory will advise of additional shipping amounts prior to shipping. 

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Expedited shipping available. Please call for pricing. 

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

Barometric / Static

Pressure Relief Dampers


Don't see what you need? 

Call us and we can usually help, because Dampers and Zone Control is our only business!



Barometric and static pressure relief dampers should be used on many zoning systems to control static pressure, register noise, and to insure proper CFM across the coils and heat exchangers. Both barometric and static pressure relief dampers usually mount in a duct that is attached from the supply plenum to the return air plenum; excess air is routed back through the unit and additionally heated or cooled. Our products and design techniques are "by-the-book", and conform to typical industry practice and guidelines.

4092 Series Round Static Pressure Relief Dampers, Pressure relief damper, barometric damper, hvac, air conditioning supplies, RetroZone
PRD Series Rectangular Barometric Relief Dampers, Pressure relief damper, barometric damper, hvac, air conditioning supplies, RetroZone
DD Series Pressure Relief Rectangular Dampers, Pressure relief damper, barometric damper, hvac, air conditioning supplies, RetroZone

DDRD Series Round Barometric Relief Dampers

PRD Series Rectangular Barometric Relief Dampers 

DD Series Pressure Relief Dampers

4092 Series Round Static Pressure Relief Dampers

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

The 4092 Series round static pressure damper is a true, modulated motor static pressure relief system that will hold a precise system's static pressure.

Rectangular barometric relief dampers have a single blade design with an adjustable weighed arm to regulate static pressure.

Rectangular barometric relief dampers have a single blade design with an adjustable weighed arm to regulate static pressure.

Economy Motorized Static Pressure Relief Damper

Round OR Rectangular

SDRD, SD Damper, commercial grade damper, damper, hvac, air conditioning supplies, Retrozone, zoning supply
ADPS-08-1-N, Damper accessories, hvac, air conditioning supplies "frost protection for heat exchanges" "monitoring flow in vent ducts" "monitoring industrial cooling-air circuits" "monitoring air filters and ventilators" "overheating protection for fan heaters" "controlling air and fire protection dampers"
3085 Series Commercial Mechanical Rectangular Damper, rectangular dampers, mechanical damper, custom damper, hvac, air conditioning supplies, RetroZone
ADPS-08-1-N, Damper accessories, hvac, air conditioning supplies "frost protection for heat exchanges" "monitoring flow in vent ducts" "monitoring industrial cooling-air circuits" "monitoring air filters and ventilators" "overheating protection for fan heaters" "controlling air and fire protection dampers"

SD Damper and

 ADPS Switch

3085 Rectangular Damper and ADPS Switch

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