This white polymer ventilation fan is easy to install and remove and is dishwasher safe for easy cleaning. Its permanently lubricated motor features keyhole mounting, a motor mounting bracket, and precision balanced impeller for quiet operation. The galvanized housing is suited for humid conditions and has built in mounting tabs for quick installation. The housing measures 7 5/8”W by 8 5/8”L by 4 1/8”H. It features gauge markings for ceiling thickness, a built-in junction box for easy wiring, and 3” and 4” duct adapters with a built-in damper. This fixture has a sone rating of 3.5 and a CFM rating of 70.