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Air King Back Draft Dampers

Air King 7" Round Duct Collar
7" Round Duct Collar
Air King 7" Round Duct Collar with Damper
7" Round Duct Collar with Damper
$5.26 - $35.99
No Sales Tax, Except CT
 Free S/H on Air King orders over $99!
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Product Reviews


  • metal back draft damper
  • 24-30 Gauge Aluminum
  • Sold with Exhaust fans/Range hoods purchase only
  • Not returnable
  • Sizes: 4", 6", 7", 8" or 10" Round


Air king back draft dampers are used when installing the Air King bathroom or utility exhaust fans. Backdraft dampers are designed to allow supply airflow out of the home but prevents airflow in the reverse direction.

Ship Method:

    Ships via UPS/FedEx Ground


    This item(s) is also sometimes listed under the following manufacturer numbers:

    BDD4R, BDD6, BDD8, BDD10, RDC7, E22A

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1136-1146 Stratford Avenue, Stratford, CT 06615, Tel: (203) 374-5425, Fax: (203) 373-0810, email: