Goodlite G-10829 T9 Circline 8-Inch Wide Fluorescent Tube Light Bulb, G10Q Base, Cool White 4100k Gu10 4 Pin base, 8"Inch Diameter,Primary Application: Standard 12,000 Hour Average Lamp Life - Can Last Over 10.9 Years - Burns Cooler Than Incandescent Pleasing, Soft White Light - Color Temperature 4100K Brand Cross Reference: FC8T9/CW/RS - TL9C 8W Cool White - FC8T9/CW - FC8T9/1C 1200 Lumens