Efficient lighting and clear air with structural protection? They're all guarantees that come with the NuTone QTXEN110SFLT Ultra Silent Bathroom Fan / Light / Night-Light - ENERGY STAR, a discreet lighting and ventilation system that can detect and eliminate excess humidity, preventing both cosmetic and internal damage to walls. Sensaire technology automatically senses a rise in humidity at the ceiling and will turn fans on to disperse it and off when done. The auto shut-off time is adjustable from five to 60 minutes, allowing you to conserve energy. Freshening 110 CFM ventilation is made nearly silent with a dynamically balanced blower and super-low .7 sone sound level, too.Crafted with galvanized steel and a polymeric grille, the fan is outfitted with a permanently lubricated, low RPM plug-in motor engineered for continuous operation and fits a six-inch round duct for superior performance. It mounts to joists with easy-to-install four-point hanger bars. Two sets of mounting holes for the hanger bars allow flush installation with the bottom or top of drywall. UL listed for safe use over the bathroom tub or shower with GFCI circuit. Requires a 42W fluorescent bulb (included) and 4W night-light bulb (not included).DimensionsHousing: 10.5L x 11.37W x 7.62H inchesGrille: 13L x 13.75W inchesAdditional FeaturesGalvanized steel housing and polymeric grilleLow RPM permanently lubricated plug-in motorMotor engineered for continuous operationEasy-to-install four-point hanger barsInstalls flush with drywallSenses humidity at ceiling level and automatically turns on fanAuto shut-off adjustable from 5 to 60 minutes42W fluorescent bulb includedWhat is an ENERGY STAR product?This product has earned the ENERGY STAR rating from the U.S. Environmental Protection Agency and the U.S. Department of Energy. ENERGY STAR is a voluntary labeling program designed to identify and promote energy-efficient products. These products meet strict guidelines and can help you save up to a third on energy bills compared to like products without an ENERGY STAR rating. ENERGY STAR products saved about $14 billion in 2006 alone, and their numbers are growing exponentially in product categories. This ENERGY STAR product has met criteria that will save energy, money, and reduce greenhouse gas emissions. An excellent choice.About Broan-NuToneBroan-NuTone has been leading the industry since 1932 in producing innovative ventilation products and built-in convenience products, all backed by superior customer service. Today, they're headquartered in Hartford, Wisconsin, employing more than 3200 people in eight countries. They've become North America's largest producer of medicine cabinets, ironing centers, door chimes, and they're the industry leader for range hoods, bath and ventilation fans, and heater/fan/light combination units. They are proud that more than 80 percent of their products sold in the United States are designed and manufactured in the U.S., with U.S. and imported parts. Broan-NuTone is dedicated to providing revolutionary products to improve the indoor environment of your home, in ways that also help preserve the outdoor environment.