The power 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 aluminium blades, automatic shutters that open and close in tandem with the operation of the fan. The completely enclosed motor is thermally protected and permanently lubricated. The fan comes fully assembled out of the box; only installation required is the electrical hardwire.