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

The Broan-NuTone 634M Roof Cap to provide reliable rooftop ventilation. Features a black enamel finish and is designed for use with 3-1/4 inch x 10 inch or up to 8 inch round duct. Includes a built-in back-draft damper, and protective bird screen to prevent small pests from entering duct.

• For pitched roof installation
• 24 GA. CRCQ steel, black powder coat paint finish
• Built-in backdraft damper and bird screen
• For 3¼ inch x 10 inch or up to 8 inch round duct
• With 6 inch round duct collar