Metal Halide HID Bulb Bulb Base Type Mogul Screw (E39) Bulb Dia 4 1/2 in Bulb Housing Glass Bulb Shape BT28 Color Rendering Index 70 Color Temperature 4200K Lumens 15 000 lm Light Technology Metal Halide Overall Length 8 3/4 in Shatter-Resistant No Voltage 480V Watts 175 W Bulb Beam Angle 360 Degrees Bulb Finish Clear Rated Life 6 000 hr ANSI Code M57 Dimmable No For Enclosed Fixtures Yes Bulb Operating Position Vertical Base Up +/-15 Degrees Rough Service No