Broan 646

White 6" Round Duct White Louvered Wall Cap

Item # BCI417824   |   Model # 646

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Originally $46.74, Your Savings: 39%
Free Shipping on orders over $49.00!
278 In Stock
Ships Tomorrow, January 28th


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Questions about Broan 646?

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  • What are the advantages/disadvantages between the louvered wall cap and the hooded wall cap (such as broan 843BL). Does the hooded wall cap seal better to avoid backdrafts?

    A. The difference is just the exterior appearance. The hooded cap will protect from back drafts better and also it reduces outside noise coming back through the ducting. The louvered units tend to flap and make noise in windy conditions.
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