The Broan-NuTone® 634 steel roof cap is an easy-to-install vent for exhaust fans (range hoods, bathroom, rec room, home gym, etc.). This cap provides reliable roof top ventilation and features both a back draft damper and bird screen, preventing outside air from entering the home and birds or small pests from entering duct work. Compatible with up to 8″ ducting and 3-1/4″ x 10″ ducting. Not suitable for dryer venting.
- For 3 1/4″ X 10″ or up to 8″ round duct
- Built-in backdraft damper and bird screen
- Steel baked black enamel finish
- Easy to install in new construction, replacement, or DIY applications
- Compatible with 3-1/4 in. x 10 in. ducting or up to 8 in. round ducting















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