WhisperSense DC Fan with Motion and Humidity Sensors Delay Timer and Pick-A-Flow Speed Selector 50, 80 or 110 CFMTake control of your indoor air quality with the Panasonic WhisperSense DC Fan. Equipped with motion and humidity sensors, it automatically adjusts to maintain optimal humidity levels. The delay timer allows for customizable operation, while the Pick A Flow speed selector lets you choose between 50, 80, or 110 CFM for efficient ventilation. Dimension Value Housing Length (in.) 10. 25 Housing Width (in.) 10. 25 Product Height (in.) 8. 5 Product Length