The Broan QTXE150 Ultra Silent Bathroom Fan - ENERGY STAR has a rare combination of style, performance, and power to deliver a superior product. Because of the quiet operation at 1.4 sones, you'll barely notice the QTXE 150-CFM fan. When you need just the right amount of ventilation at the touch of a switch, the QTXE fan has it. It's UL-listed for use over a tub or shower, and the motor is engineered for continuous operation. Hanger bars included for fast universal installation. Housing Dimensions: 11.375L x 10.5W x 7.625H inches. Grille Dimensions: 14L x 13W inches.What 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.