Quartz Metal Halide HID Bulb Bulb Base Type Mogul Screw (E39) Bulb Dia 4 3/5 in Bulb Housing Glass Bulb Shape ED37 Color Rendering Index 65 Color Temperature 4000K Lumens 36 000 lm Light Technology Metal Halide Overall Length 11 1/2 in Shatter-Resistant No Voltage 135V Watts 400 W Bulb Beam Angle 360 Degrees Bulb Finish Clear Rated Life 15 000 hr Dimmable No For Enclosed Fixtures Yes Bulb Operating Position Universal Burning Standards 4-39/64 in Trade Number M400UED37