40 Watt, T5 4 - GE F40/30BX/SPX41 -Pin Biax Fluorescent Lamp Color Temperature: 4,100K CRI: 82 Base Type: 4-Pin (2G11) Length: 22.5 inches Bulb Type: T5 Light Output: 3,150 lumens Color / Finish: Cool White Average Lifetime: 20,000 hours Energy Used: 40 watts