Metal Halide HID Bulb Bulb Base Type Mogul Screw (E39) Bulb Dia 3 1/2 in Bulb Housing Glass Bulb Shape ED28 Color Rendering Index 57 Color Temperature 4000K Lumens 36 000 lm Light Technology Metal Halide Overall Length 8 3/8 in Shatter-Resistant No Voltage 150V Watts 400 W Bulb Beam Angle 360 Degrees Bulb Finish Clear Rated Life 20 000 hr ANSI Code M59/E Dimmable No For Enclosed Fixtures Yes Bulb Operating Position Universal Burning Indoor/Outdoor Usage Indoor/Outdoor