Sunlite 05300-su slb11/27k/cd1 11w a-type cfl light bulb, medium base, warm white sunlite a-type compact fluorescent lamps fit into most standard fixtures and give off a warm white light much like a 40 watt incandescent bulb. These energy efficient cfl lamps can last up to 9.1 years with normal household use of 3 hours a day. This energy saving 11 watt 2700k, medium base bulb offers 450 lumens of light output and has an average rated life of 8,000 hours. Great for floor lamps, desk lamps, ceiling fixtures and most common household lighting needs.