Westinghouse 3740500, 175 Watt E39 Mogul Base, H39 ANSI BT28 Mercury Vapor HID Light Bulb Watts: 175, Volts: 120 Color/Kelvin Temperature: White/4000K CRI: 41, Lumens (Brightness): 8900, Rated Lifetime Hours: 24000 Base: E39 Mogul