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Deflect-O 4 in. W X 5 in. L White Plastic Back Draft Damper

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Stops cold air and drafts from sneaking back through your dryer, bath, or range vent when the fan's off.
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Deflect-O item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

  • Authorized dealer network · Full manufacturer warranty & support
  • Guaranteed authentic · No counterfeits, no gray-market resellers
  • The brands set these standards · Be wary of sellers who don't follow them
Why isn't this online? The whole story →

About Product Overview

The Damper Inline Draft Blok from Deflect-o fits into your dryer, bath, or range vent line to stop cold air and outside drafts from blowing back into the house when the fan isn't running. It works as a back draft damper, opening to let air flow out during venting and closing on its own once airflow stops, so you're not losing heated or cooled air through the ductwork.

  • Product type: back draft damper
  • Material: plastic, white finish
  • Opening: 5" x 4"
  • Exterior diameter: 9.25"
  • Made in the USA

The Details Specifications

Brand Deflect-O
Model / MPN BD04
UPC 079916500706
Weight Under 1 lb
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
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