"iLiving - Wall-Mounted Shutter Exhaust Fan With Thermostat ControlAre you looking for a reliable way to reduce your cooling costs while keeping your home cooler and more comfortable year-round? If so, you’ve found just what you’re looking for! Hardwire required. Made with top quality materials, craftsmanship and engineering, the iLiving Shutter Exhaust Fan is designed to offer superior ventilation in any space you choose to install. By removing excess heat and moisture our exhaust fan will keep your living space cooler and more comfortable year-round while reducing expensive cooling bills.• Heavy-Duty, Galvanized Steel Frame• Weather Resistant Aluminum Shutters and Blades• Motion-Balanced for Quiet Operation• Thermally Protected and Permanently Lubricated Motor• Automatic Shutters• For Home Cooling and Ventilation• Corrosion-Resistant Wire Guards•Powerful Single Speed• UL Listed• Available in 3 Size VariationsPerfect Cooling and Ventilation Solution For• Homes• Attics• Garages• Sheds• Removing Excess Heat and Moisture• Regulating Room Temperature• Reducing Cooling Costs• And MoreThe fan comes fully assembled out of the box; easy installation. The shutter fan comes in 3 different sizes: 18 inches, 30 inches, and 36 inches."