Speedi-Products SM-RWVD 4 Wall Vent Hood with Spring Damper, 4-Inch
Speedi-Products 4-Inch Galvanized Wall Vent with spring return damper. For use as the outside sidewall termination of Kitchen, Bath and Dryer exhaust systems. Made of durable galvanized sheet metal. Can be used for Remodeling, Do it yourself and New Residential projects.