Westinghouse 0752300, 48 Inch 40 Watt T12, 2200 Lumens 6500K Fluorescent Tube LIght Bulb Watts: 40, Volts: 120 Color/Kelvin Temperature: Daylight/6500K CRI: 90, Lumens (Brightness): 2200, Rated Lifetime Hours: 20000 Base: Medium Bi-Pin