Sunlite compact fluorescent plug-in lamps are available in a wide range of sizes, wattages, color temperatures and pin configurations. This Sunlite 27 watt compact fluorescent FML plug-in light bulb offers a light output of 1500 lumens and a color accuracy of 80 CRI. It has an average lamp life of 10,000 hours. The 6500K color temperature produces a daylight light. This lamp fits a GX10Q-4 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.