Description of Broan 421:
Maximize the air and sound performance of your Broan ventilation fan or range hood using one of our wide variety of ducting accessories.
- 10" round vertical discharge in-line damper operates in conjunction with the use of your ventilation fan or range hood
- Damper is made of 24 gauge galvanized steel construction for durability and long life
- Sold as 1 to a carton