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 62 Color Temperature 4100K Lumens 30 000 lm Light Technology Metal Halide Overall Length 1 in Shatter-Resistant No Watts 320 W Bulb Beam Angle 360 Degrees Bulb Finish Clear Rated Life 20 000 hr ANSI Code M154/M132/E Dimmable No For Enclosed Fixtures Yes Bulb Operating Position Universal Burning Indoor/Outdoor Usage Indoor/Outdoor