Luxrite LR20780 (6-Pack) F54T5/830/HO 54-Watt 4 FT T5 High Output Fluorescent Tube Light Bulb, Soft White 3000K, 4200 Lumens, G5 Mini Bi-Pin Base Color/Finish: Soft White Color Temperature: 3,000K Average Lifetime: 20,000 hours Lumens (light output): 4200 G5 mini bi-pin base