FlexFlow technology, select between 50, 80 or 110 cfm|Quiet operation at <0.3/0.4/0.9 sones|Powerful ventilation reduces humidity to quickly eliminate fogged mirrors and manage moisture, so your vision will always be clear and your surroundings will always be comfortable|Retrofit installations can be done entirely from the room-side - no attic access required|This means a faster, easier installation, so you can move on to something else|Flex DC 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|Plug in, permanently lubricated, brushless DC motor - engineered for continuous operation|Can be installed in a wall if mounted 8 ft or more above the floor|Includes an 11 W, 3500 K, integrated LED module that lasts up to 25000 hr for maintenance-free convenience|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 locating your fan exactly where you need it the most|Quiet, energy efficient exhaust fan to help control air quality|Selectable CFM For flexible installation|Easy to install new/replace existing product from the roomside