The Air King FRAK90 Quiet Exhaust Bath Fan is an efficient, Energy Star qualified 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 speed settings operating at 90-CFM at 1.5-Sones (29.9-Watts) and 78-CFM, the FRAK80 is suitable for bathrooms up to 80-square feet and other rooms up to 110-square feet. This exhaust fan comes complete with a back damper for quiet operation and a 4-inch 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 FRAK90 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 compliant with California Title 24 requirements and is UL listed for installation over a tub or shower on a GFCI circuit. The FRAK90 measures 10-3/4-inches by 9-1/4-inches by 7-7/8-inches and features a 24-gauge steel construction with a white finish. The Air King FRAK90 Energy Star Qualified Fire-Rated Quiet Exhaust Bath Fan comes with a 5-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.