The durable Cadet 4,000-Watt Garage Heater requires a NEMA #6-20 240-Volt receptacle (not a standard 120-Volt outlet) to provide your garage or workshop with powerful warmth on cold days. It features 2 heat setting positions for versatility in either low or high wattages. It also offers a built-in fan-only switch that provides comfortable air circulation without producing heat during the summer months. Ideal for warming garages and workshops, with rugged construction.