ProLume® pulse start lamp and ballast systems consume less energy compared to standard metal halide systems, all while providing the same lumen output. They boast better light quality than both high pressure sodium and mercury vapor lamps and more efficient than mercury vapor lamps. These lamps are unaffected by standard ambient temperature and suitable for indoor and outdoor use.

Halco® ProLume® Metal Halide Lamp, Dimmable Universal, MH400/U/ED28/PS Designation, 400 W Wattage, HID Metal Halide Lamp, E39 Mogul Lamp Base, ED28 Shape, 38000 Lumens, 20000 hr Average Life, Cool White, 65 CRI, 4000 K Color Temperature, Clear Lamp, Pulse Start, Electromagnetic Ballast, Enclosed Fixture, 3.54 in Dia x 8.25 in L Dimensions

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• High efficacy
• Improved lumen maintenance
• Consistent lamp to lamp color
• Improved color rendering compared to high pressure sodium and mercury vapor lamps
• Long life - up to 20000 hr average rated life