Powerful, environmentally-responsible ultra-slim lamps Philips T5 Warranty period - 36 months.;Sustainable Lighting Solution - low mercury.;Ultra slim profile allows for flexibility in design. Philips T5 Fluorescent Lamps featuring ALTO Lamp Technology offer increased energy savings and low toxicity in a slim profile. Less mercury combined with energy efficiency and long life reduces the impact on the environment.;Our green end-caps mean you are using ALTO environmentally-responsible lamps.;Only 1.4mg of mercury per lamp.;Slim profile lamp and ballast.;Operates on programmed start electronic ballasts only.;Available in 14, 21, 28, and 35 Watts with 3000, 3500, 4100 color temperatures. Ideal for general, decorative and architectural lighting in offices, retail stores, hotels, schools and hospitals.