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 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.

Available Sizes: 4" to 10”,12",14", and 16".
NSPRD Dampers have a 2 Wire Spring Return Motor

NSPRD Round Dampers

  (Free Shipping in Continental the US)

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NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty
NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty
NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty
NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty
NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty
NSPRD Spring Return Round Damper, Durozone, 2 wire damper motor, 5 year warranty

This damper is a Spring Return Damper with a 2 wire motor that can be field configured for either Power Open (PO) OR Power Closed (PC).  The damper blade will remain open or closed,as long as power is supplied to the motor.  Comes standard with low leakage Vinyl Nitrite gaskets and are available with 24 AC.


  • Voltage: 24V AC (8 VA power draw when energized)
  • Operation: Power open, spring close or Power Closed spring open (can be easily converted to either)
  • Warranty: 5-Year Manufacturer's Warranty
  • UL Rated: Safe for use at furnace outputs up to 200°F



Support: Factory Installation Instructions


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