Panasonic WhisperFit DC 110 CFM 1.2 Sone Humidity Sensing Ceiling Mounted Bath Exhaust Fan with Energy Star Rating FV-0511VFC1

Product Overview:  Panasonic WhisperFit DC 110 CFM 1.2 Sone Humidity Sensing Ceiling Mounted Bath Exhaust Fan with Energy Star Rating FV-0511VFC1 Key Features: The ECM DC Motor with SmartFlow Technology ensures optimal CFM output & desired airflow Extremely quiet less than 0.3 sones at 50 CFM, 0.3 sones at 80 CFM and 0.8 sones at 110 CFM when using 4 in. duct Advance sensor technology detects relative humidity & temperature to anticipate dew point automatically turning the fan on to control moisture. A delay timer runs the fan for 20 minutes when power is first turned on & after 20 minutes it turns off automatically unless moisture level is above the trigger point and the fan automatically turns on Low profile housing design at 5 5/8 in. deep, fits in 2 in. x 6 in. construction Alignment guide slides housing in place for a tight fit; temporary clip holds fan in place so installer has 2 hands free to insert motor; templet to assure hole size & protect parts from dust; &