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Retrozone and Flexdamper are trademarks of Retrozone inc.

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Surplus Rectangular Dampers

In Stock and Ready to Ship!

SD “Super Duty”

 3085 Series Damper

SD “Super Duty” 3085 Series Damper

No Motor Included

Clearance

Surplus SD3085  No Motor Rectangular Dampers, HVAC


Have your own motors? 

The 3085 Series Commercial Dampers are available with no motors installed.  Whether you want to add motors later, or have your own motors,  now you can have our best-in-industry damper cans for your installation. These dampers feature the finest construction and parts in the industry, and will not crack, come apart, have blades fall off or leak through seams like lesser quality dampers.


Don’t see the size you need? 

Click here to view all SD3085 No Motor options.

3150 Series Damper

Obsolete

Clearance

Surplus SD3150 Rectangular Dampers, HVAC


OEM quality damper is sold nationwide under a major HVAC manufacturer's name and is our most popular rectangular damper. Used for zone control systems or slave zones into unoccupied areas, these dampers are all 24vac driven and can be connected directly to a thermostat for simple control of any room or office. Also works with any zone control system using a 2 position, 24vac damper. Constructed of all aluminum and stainless steel parts for long corrosion free operation, these dampers are tested to the industry standard 250,000 cycles of operation


Don’t see the size you need?

Click here to view the upgraded 3151 Dampers.

3151 Series Damper

Clearance

Surplus SD3151 Rectangular Dampers, HVAC

OEM quality damper is sold nationwide under a major HVAC manufacturer's name and is our most popular rectangular damper. Used for zone control systems or slave zones into unoccupied areas, these dampers are all 24vac driven and can be connected directly to a thermostat for simple control of any room or office. Also works with any zone control system using a 2 position, 24vac damper. Constructed of all aluminum and stainless steel parts for long corrosion free operation, these dampers are tested to the industry standard 250,000 cycles of operation


Don’t see the size you need?

Click here to view all 3151 options.

Durozone PMB Series

Durozone Motorized Zone Control 3 Wire 

Rectangular Damper

Clearance




Surplus DuroZone PMB Rectangular Dampers, Clearance Rectangular Damper

RZMMB Damper

24 Volt Spring Return Mid-Torque Multi-Blade Damper

Clearance

Clearance Spring Return Rectangular RZMMB Damper

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