Length: 123mm Width: 49mm An 18 Watt Triple Turn (3 Loops) Energy Saving PL-T compact fluorescent lamp with 2 pin base (GX24d-2). This energy efficient PL-T lamp has an average life of 10,000 hours and has an A class energy efficiency rating. We stock branded cheap compact fluorescents including - PLT, Biax T, Lynx T, Dulux T. *This PL-T lamp is available in colours: - Extra Warm White = 827 Warm White = 830 Standard White = 835 Cool White = 840 What is this lamp commonly known as? GE - 18w Biax T Osram - 18w Dulux T Sylvania - 18w Lynx T Philips - 18w Master PL-T Other: Triple Turn, TC-T Please note - These lamps should be replaced like for like. If you have a 18w lamp in your fitting, it must be replaced with a 18w lamp. You cannot reduce or increase the wattage.