Sunlite 05544-su sl105/30k/mog/277v spiral cfl light bulb, mogul base, warm white sunlite high wattage spiral compact fluorescent lamps give off a warm white light much like a 400 watt incandescent bulb. These energy efficient cfl lamps can last up to 7.3 years with normal household use of 3 hours a day. This energy saving 105 watt 3000k, mogul base bulb offers 5000 lumens of light output and has an average rated life of 8,000 hours.