Ultra Quiet 90CFM, 1.5 sone Mounting opening: 9.45" x 9.45", Height: 7.28", 4" Duct diameter Low profile grille assembly, Efficiently ventilating for bathroom space up to 90 sq-ft. cUL Listed for over tub & shower with GFCI.HVI certified. Recommended for professional installation. Three-years limited product warranty with technical support service included Bathroom Fan with Light Ultra Quiet 90CFM 1.5Sone Ventilation Fan Exhaust Fan with LED Light（9W E26 Base LED Bulb Included）Akicon