A green, flexible choice Integral starter cuts installation wiring costs and permits use of small chose ballasts;Better for the environment with ALTO lamp technology;Available in variable color temperatures Philips Linear Compact Fluorescent Lamps offer designers, specifiers and end-users new levels of efficiencies and versatility in sizes, configurations and application possibilities. With so many elegant fixtures available to complement their small size, high light output and advanced technology, Philips Energy Advantage lamps are fast becoming the preferred choice when maximum efficiency and sleek design solutions are required. High Lamp Efficacy;10,000 Hour Rated Average Life*;Designed for Use with Magnetic Ballasts;Integral Starter in Base;ALTO Lamp Technology;Available in 5,7,9, and 13 watts with 2700,3000,3500, 4100 and 5000 color temperatures;*Average life under specified test conditions with lamps turned off and restarted no more frequently than once every 3 operating hours. Lamp life is appreciably longer if lamps are started less frequently. They are ideal for recessed and surface mounted downlights, task lighting, corridor, security and general lighting