Broan Steel 12.25"L, 12"H, 21.5"W Exhaust Fan L700L

Includes Automatic Backdraft Damper, Moun Standards UL/cUL For use with General Ventilation Applications Housing Material Steel Voltage 120V ACYou may also like Broan-Nutone 885AL Aluminum Wall Cap for 3 & 4 in. Round Duct.