(6-Pack) F13T5/CW 13-WATT FLUORESCENT LAMP F13T5 COOL WHITE DISPLAY LIGHT BULB 20,000 HOURS (Pack of 6 bulbs) F13T5/CW, 13-Watt T5 21" Maximum Overall lenght DOUBLE EXTRA LONG LIFE - 20,000 HOURS Cool White (4100K)