(Pack Of 2) FC40T5/835-12" T5 Flurescent Circline - 40 Watt - 3500K Kelvin - 2GX13 Base - (FC12T5/835) FC40T5/835 - Pack Of 2 Bulbs 40 Watt - Circline T5 Fluorescent Tube 12" Diameter - 2GX13 Base Super Bright - 3500 Kelvin Color Long Life - 12,000 Hours - 3300 Lumens - 82 CRI