Broan 639 Wall Cap For 3-1/4 X 10 Duct For Range Hoods & Bath Ventilation Fans

BROAN MFG CO INC 639 Wall Cap For 3-1/4" X 10" Duct For Range Hoods & Bath Ventilation Fans Use to maximize the air and sound performance of your Broan ventilation fan or range hood Equipped with a spring-loaded backdraft damper & bird screen to keep nests & small animals on the outside Duct fitting protrudes 4-7/8" from back of cap to allow proper fit to the ductwork (not for use with dryer venting) Made of 24 gauge CRCQ steel construction Black electrically-bonded epoxy finish for durability & long life 12-3/4" X 5-5/8" overall size Broan