panasonic fv-0811vfm5 whisperfit ez retrofit ventilation fan with motion sensor, 80 or 110 cfm panasonic panasonic fv-08-11vfm5 whisperfit ez retrofit bathroom fan with smartaction is an affordable choice for delivering quiet, energy efficient and effective exhaust ventilation. ideal for residential remodeling and hotel construction or renovations, these fans fit where you need to put them (even in 2x6 construction). built-in pick-a-flow speed selector allows you to select desired airflow (80 or 110 cfm). being able to choose the proper cfm level gives you the flexibility and assurance that one fan can satisfy a range of ventilation design requirements and perform as promised, even with a complicated duct run. the built-in smartaction motion sensor with 20 minute delay off timer automatically activates the fan when someone enters the room. installation is made easy with the flex-z fast installation bracket and detachable installation adapter. the detachable installation adapter provides even greater flexibility, as it simply slides off the fan housing for easy wiring and attachment of the duct from under the ceiling. panasonic fans use less energy to move larger volumes of air than other brands. consequently, panasonic fans run cooler so they last longer. they are also much less likely to overheat and result in motor failure. panasonic ventilation fans are energy star certified and provide greater efficiency and comfort with less noise. high performing motors and improved blade design deliver superior performance and long life you expect from a premium panasonic ventilation fan. achieve quality air and energy efficiency with whisper-quiet sound levels for your spaces with panasonic fv-08-11vfm5 whisperfit ez retrofit ventilation fan with smartaction.