TPI Corporation FHK6243A Portable Electric Infrared Heater, Metal Sheath, Single or Three Phase, 6kW, 240V Radiant heater appropriate for spot heating of small rooms and work areas Infrared heating element helps provide greater energy efficiency than forced air heaters, with steel sheath for protection against vibration Wheeled steel enclosure is double-layered to help keep outer surface cool for safety, and has wire screens for protection of the heating element Reflector and end caps made of gold anodized aluminum for efficient radiant energy transfer Single- or three-phase, 240V wiring is compatible with most appliance circuits