Builder's Best 111804 PEV802/PEV620 4-Inch Under-Eave Exhaust Vent

• Can be used for bathroom fan or dryer vent ;• Polypropylene molded plastic ;• Locking ring connection on back ;• Available with 3/4" connecting ring or 3" aluminum tail ;• Back draft flapper ;• White;

Manufacturer's Warranty: 30-DAY