Are you looking for a reliable way to reduce your cooling costs while keeping your home cooler and more comfortable year-round? So, you have found just what you're looking for! Made with top quality materials, craftsmanship and engineering, 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. The fan comes fully assembled out of the box.For Variable-Speed-Control feature, recommend to use with the iLIVING speed controller : ILG8SFST (Thermospeed) or ILG8SFRC (Remote Kit), which is sold separately. Color: Silver.