HIGH-QUALITY FAN: Quiet, energy efficient exhaust fan operates with 110 CFM and 1.0 Sones to help control air quality is powerful enough for rooms (including bathroom) up to 105 sq. ft. EFFICIENT: Powerful ventilation automatically turns on and reduces when raised to a higher level than normal to quickly eliminate fogged mirrors at 110 CFM, so your vision will always be clear and your surroundings will always be comfortable EASY INSTALLATION: Easy to install new/replace existing product with retrofit installations that can be done entirely from the room-side – no attic access required RELIABLE PERFORMANCE: With our TrueSeal Damper Technology, InVent fans reduce air leakage by up to 50% compared to competitive models, resulting in better home performance via blower door tests and reducing cold and warm air backdrafts GREAT FOR BATHROOM: This ENERGY STAR certified vent fan is UL Listed for use over tubs and showers, with a GFCI circuit so you can capture the steam before it spreads throughout the room by placing your fan exactly where you need it the most