Ducts, Dampers, Adapters & Caps

Broan-NuTone® Steel Roof Cap for 6-Inch Round Duct with Backdraft Damper and Bird Screen, Black

The attractive Broan® 634M roof cap is the perfect finish for your ventilation system. The built-in back-draft damper eliminates cold air from entering the home. The bird screen stops unwanted visitors from gaining entry.

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