26 watt, 4-Pin GX24q-3 Base, Cool White 4100K, Triple Tube, Compact Fluorescent Light Bulb.
Pack of 6 Compact Fluorescent (CFL) Plug-In Light Bulbs
10,000 Hours of Lifetime
4100K Bright Cool White
GX24Q-3 4-Pin Base
Make sure the base precisely matches your fixtures socket as this lamp will only work with the specific external electronic ballast it is a designed for