Broan 772RBNT Oil Rubbed Bronze 80 CFM 2 Sone Ceiling Mounted Energy Star Rated and HVI Certified Decorative Bath Fan with Light and Domed Alabaster Glass Shade 80 CFM, 2 Sones Duct Size: 4 Inch Round Grille Diameter: 13.5 Lighting Type: Fluorescent (bulbs included) HVI Certified: Yes