HID Bulb, Bulb Base Type Mogul Screw (E39), Bulb Dia. 3 1/2 in, Bulb Housing Glass/Metal, Bulb Shape ED28, Color Rendering Index 62, Color Temperature 3900K, Lumens 22,400 lm, Light Technology Metal Halide, Overall Length 8 1/4 in, Shatter-Resistant No, Voltage Not Applicable, Watts 250 W, Bulb Beam Angle Not Applicable, Bulb Finish Clear, Rated Life 15,000 hr, ANSI Code M138/M153, Dimmable No, For Enclosed Fixtures Yes, Bulb Operating Position Universal Burning