MH400/U/ET18 LONG LIFE METAL HALIDE BULB - ET18 SHAPE - OPERATES ON ANSI CODE M59 BALLAST - Supra Life metal halide lamps are engineered to offer top performance, energy efficiency, and long life. For use wherever high performance lighting and accurate color rendition is required. Designed for universal burning positions, Supra Life metal halides will maintain consistent color throughout their extended lifespans, saving you money on maintenance and bulb replacements. Our energy efficient Metal Halide lamps provide bright white light and can be used in commercial, industrial, retail, stadium, area, or architectural applications. Supra Life metal halide bulbs provide 24,000 burning hours, and last up to 4 times longer than standard lamps. For high performance HID lighting and exceptional color rendition, Supra Life metal halides stand alone as the industry leader!