TPI Corporation FHK2481A Portable Electric Infrared Heater, Metal Sheath, Single Phase, 2kW, 480V 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 Freestanding 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-phase, 480V wiring is compatible with some commercial shop circuits