Sunlite 02175-su ft18dl/841 18 watt ft 4-pin twin tube 2g11 base, cool white 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. features: shape: ful average life hours: 5000 wattage: 13 package quantity: 10