Protected Ceramic Metal Halide, Bulb Base Type Medium Screw (E26), Bulb Dia. 2 1/8 in, Bulb Housing Glass, Bulb Shape ED17, Color Rendering Index 90, Color Temperature 4000K, Lumens 7,900 lm, Light Technology Ceramic Metal Halide, Overall Length 5 1/2 in, Shatter- No, Voltage 118V, Watts 100 W, Bulb Beam Angle 360 Degrees , Bulb Finish Frosted, Rated Life 20,000 hr, ANSI Code C90/O, Dimmable No, For Enclosed Fixtures No, Bulb Operating Position Universal Burning, Standards