Westinghouse 0575200, 48 Inch 40 Watt T12, 2150 Lumens 4100K Fluorescent Tube LIght Bulb Watts: 40, Volts: 120 Color/Kelvin Temperature: Cool White/4100K CRI: 89, Lumens (Brightness): 2150, Rated Lifetime Hours: 20000 Base: Medium Bi-Pin