The Air King FRAS50 Exhaust Bath Fan is a safe and fire-rated way to provide ventilation at low sound levels. This exhaust fan is ideal for multi-family residential projects using wood frame construction and complies with important requirements to help prevent the spread of fire. With dual speed settings operating at 50-CFM at 3.0-Sones, the FRAS50 is suitable for bathrooms up to 45-square feet and other rooms up to 65-square feet. This exhaust fan comes complete with a back draft damper for quiet operation and a 3-inch round duct collar for duct ventilation. Air King fire-rated exhaust fans have been tested and are UL Listed for use in wood frame construction. The FRAS50 is simple to set up using the double thick keyhole mounting tabs and includes mounting hanger bars for an easy installation process. This exhaust fan is UL listed for installation over a tub or shower on a GFCI circuit. The FRAS50 measures 7-3/8-inches by 7-5/8-inches by 5-7/8-inches and features a 24-gauge steel construction with a white finish. The Air King FRAS50 Fire-Rated Exhaust Bath Fan comes with a 1-year limited warranty. Air King offers a full line of industrial grade and commercial grade air circulating fan solutions to meet almost any need you might have. Whether your need is in industrial settings such as manufacturing plants and warehouses or more commercial setting such as offices, schools or hospitals - Air King has the perfect solution for you. Powerful motors that last for years and years are what Air King's Air Circulators have come to been know as and we are not stopping now.