E80SH 80 CFM Energy Star ECO Humidity Sensing Exhaust FanAir Kings ENERGY STAR certified ECO humidity sensing exhaust fans provide efficient and effective ventilation at barely audible sound levels for bathrooms, laundry rooms and other areas of your home needing ventilation. The integrated humidistat senses the humidity level of the room and turns the fan on until the humidity level is below the preset percentage. Humidity level can be set up to 80% relative humidity. The energy efficient motor is suitable