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 170,000 lm, Light Technology Metal Halide, Overall Length 15 3/8 in, Shatter- No, Voltage 283V, Watts 1,500 W, Bulb Beam Angle 360 Degrees , Bulb Finish Clear, Rated Life 6,000 hr, ANSI Code M48/E, Dimmable No, For Enclosed Fixtures Yes, Bulb Operating Position Vertical Base Up +/-15 Degrees