4 in. Steel Roof Exhaust Hood

You can now safely install a bathroom exhaust from inside a building with the KOZY KOLLAR Exhaust Hood A simple solution to prevent mold caused by improper vent installations. The KOZY KOLLAR Exhaust Hood is designed for 0 to unlimited pitch roof and works on conventional shingles, architectural shingles, and rolled roofing materials. Easy to install in any weather conditions.