Color Temperature: 4000 (Cool White) Shape: BD17 (Eliptical Dimple Enclosed) Volts AC: 120, 208, 240, 277, 480 Philips Lighting MH175/U/M 175 Watt Standard Metal Halide Bulb Metal Halide Lamp, 175W, Bulb: BD17, Base: Medium Screw (E39), Lumens: 13,500, CRI: 65, Color Temp: 4000K, ANSI Code: M57/E. Color: Clear. *Philips Part # 31358-5*