Select the Broan 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.
- Designed for easy installation
- Compatible with either a 3 in. or 4 in. round duct
- Manufactured of steel with baked black enamel finish for added durability and resilience
- Includes built-in back draft damper and bird screen for increased protection
- Pick the best air filters for your home. Check out our Buying Guide for helpful tips.