A compact lamp with enhanced performance Compact quad tube design;Sustainable lighting solution - only 1.4mg of mercury per lamp;Designed for use with electronic ballasts for lower operating costs and flicker-free starting 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 effciency and sleek design solutions are required. Enhanced Performance;Quad Tube Design;Dimmable;12,000 Hour Rated Average Life*;ALTO Lamp Technology;Available in: 13,18,26 watts with 2700,3000,3500,and 4100 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. Ideal for downlights and wall washers in general lighting and wall sconces in decorative lighting