the Quiet exhaust fan series features an energy efficient fluorescent light with a contoured low profile grill, a moonstone glass lens and a night light. All can be wired to operate separately and the electronically balanced centrifugal blower wheel assures maximum ventilation at minimum sound. Spring-loaded damper protects against back drafts. UL listed for installation over a tub or shower on a GFCI circuit. HV12100 Certified. Standard 26 W maximum compact fluorescent four-pin quad tube lamp, 7 W night light, Motors suitable for continuous operation. 4 in metal duct collar with back draft damper provides a solid ducting connection and prevents drafts from entering the room. White polymeric grill 11 x 13-3/4 in. Polymeric dual blower wheel. (Use Orgill Sku 544.6042 for replacement bulb).