Product details:

Vent the humidity out of your bathroom or kitchen with this Broan wall cap. It fits 8-inch round ducts and slots into your wall to protect the ductwork, protect the wall and ensure that the exhaust is removed effectively. This Broan wall cap has a natural finish to help it blend in. Compatible with 8?茖?round duct for range hoods and bath ventilation fans Maximize the air and sound performance of your Broan ventilation fan or range hood. Wall cap Equipped with a backdraft damper. 22-gauge CRCQ steel construction with .025 natural aluminum finish Provides durability as well as a clean and finished look.Steel construction with a natural aluminum finish for added durability and resilience
High capacity wall cap designed for use with 8 in. round exterior ducting
Designed for easy installation
Includes built-in backdraft damper for increased protection and 3-3/8 in. long attachment collar