Sunlite F25T8/SP841/10PK T8 High Performance Medium Bi-Pin (G13) Base Straight Tube Bulb (10 Pack), 25W/4100K, Cool White 25 Watt, Case of 10 Lamp T8 Light Bulb, Produces a spectacular Cool White Light at 4100K Simply remove and replace current bulbs Works with linear fluorescent rapid & instant start fixtures Ideal solution for commercial, industrial, sign, and display applications