The iLIVING Shutter Exhaust Fan is perfect for removing excess heat, moisture, and unpleasant odors from virtually any commercial location, including restaurants, factories, warehouses, barns, and greenhouses. This fan features aluminum blades, OSHA compliant wire guards, and automatic shutters that open and close in tandem with the operation of the fan. The completely enclosed motor is thermally protected and permanently lubricated. Equipped with the newest Thermospeed Controller which can easily control the temperature and speed. Auto cycle On/OFF at your desired temperature. The fan comes fully assembled out of the box; The only installation required is the electrical hardwiring.