Broan 636 – Steel Roof Cap for 3″ or 4″ Round Duct with Damper & Bird Screen – Black

Select the Broan-NuTone 636 Roof Cap to provide reliable rooftop ventilation. Features a black enamel finish and is designed for use with 3 in. or 4 in. round ducts. Includes a built-in back-draft damper, and protective bird screen to prevent small pests from entering duct.

Features

• For pitched roof installation
• 25 GA. CRCQ steel, black powder coat paint finish
• Built-in backdraft damper and bird screen
• For 3″ or 4″ round duct

HEZ2110175