Sunlite compact fluorescent plug-in lamps are available in a wide range of sizes, wattages, color temperatures and pin configurations. This Sunlite 18 watt compact fluorescent FT plug-in light bulb offers a light output of 1200 lumens and a color accuracy of 80 CRI . It has an average lamp life of 10,000 hours. The 4100K color temperature produces a cool white light. This lamp fits a 2G11 socket. 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.