Due to an exceptionally long average life of 36000 hours these Osram Dulux-L XT Compact Fluorescent Lamps offer a much lower total cost of ownership and increase the time between relamping. As such these lamps are particularly suitable for luminaires that are difficult to access including locations like Concourses and Airports. This version has a 24 watt rating Cool White glow and 2G11 cap.