42110" Round Damper for Range Hoods and Bath Ventilation Fans

  • Overview
  • Specifications
  • Reviews
  • Answers
  • Maximize the air and sound performance of your Broan ventilation fan or range hood using one of our wide variety of ducting accessories.

    • 10" round vertical discharge in-line damper operates in conjunction with the use of your ventilation fan or range hood
    • Damper is made of 24 gauge galvanized steel construction for durability and long life
    • Sold as 1 to a carton
  • Do I need t buy the damper

    Hi I brought Broan 332H Exterior Blower and Broan E64E30SS 30" Under Cabinet Canopy Range. I installed them without the damper. But I can feel wind come in from the Range. I am wonder do I need to buy a 10" Round Damper. And what do I need to install the damper. Bests, Shawn
    Asked by: Anonymous
    Thank you for your question on the model E64E30SS range hood and 332H exterior blower. The 332H exterior blower should have a back draft damper included with it. First check to make sure that it is working properly. It would also be a good idea to install a 10 inch damper in the duct work, close to where the duct work connects to the hood. Please contact the Technical Service Department at 800-637-1453 for further assistance.
    Answered by: BroanCustomerService
    Date published: 2014-02-12

    Will this work in horizontal duct installations? What is the exact diameter?

    Asked by: Anonymous
    Thank you for your question on the model 421 ten inch gravity fed back draft damper. The 421 is designed to work in-line with ten inch duct work, but it must be placed in vertical ducting to work properly. Please contact the Technical Service Department at 800-637-1453 if you need further assistance.
    Answered by: BroanCustomerService
    Date published: 2016-11-07

    Is the 421 round damper needed if I am using the 437 Roof cap?

    Asked by: Anonymous
    Thank you for your question on the model 421 in-line damper and the 437 roof cap. If you are using the 437 roof cap, you probably would not need the 421 damper.
    Answered by: BroanCustomerService
    Date published: 2015-06-30
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