Quartz Metal Halide HID Bulb, Bulb Base Type Mogul Screw (E39), Bulb Dia. 7 in, Bulb Housing Glass, Bulb Shape BT56, Color Rendering Index 65, Color Temperature 4000K, Lumens 110,000 lm, Light Technology Metal Halide, Overall Length 15 3/8 in, Shatter- No, Voltage 263V, Watts 1,000 W, Bulb Beam Angle 360 Degrees , Bulb Finish Clear, Rated Life 12,000 hr, ANSI Code M47/S, Dimmable No, For Enclosed Fixtures Yes, Bulb Operating Position Universal Burning, Standards