Affordable, reliable Box Fans with industrial-strength shutters deliver comfort. n n• Heavy-duty 18 gauge galvanized steel fan, with galvanized venturi and 3-blade props. n• Removable, hot-dipped after welded, galvanized wire mesh guard. n• Industrial-grade aluminum shutter. n• Plastic guard clips minimize noise. n• Energy-efficient motor. n• Single speed, single phase. n• Pre-lubricated ball bearings, thermal overload protection. n• Fans are hard wired and do not come with power supply cord. We recommend our Pig Tail Power Supply Cords, sold separately