GE Lamps Mercury Vapor Lamp, HID, HR250A37 Designation, 250 W Wattage, Mercury Vapor Lamp, E39 Mogul Screw Lamp Base, ED28 Shape, 11000 Lumens Initial, 7700 Lumens Mean, 20000 hr Average Life, 15 CRI, 5700 K Color Temperature, Clear Lamp, Open/Closed Fixture, 3-1/2 in Dia x 8-1/4 in L

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• HID is generally the most efficient light source
• Better efficiency almost always means lower operating cost
• Most HID lamps have life ratings that are better than incandescent lamps and similar to fluorescent lamps
• An HID lamp produces high light output from a relatively compact source
• Like incandescent, it is a point light source, which allows for good optical control
• Phosphor coated deluxe lamps provide good color rendering