Powerful, ultra-slim lamps Reduces the impact on the environment with low mercury, energy efficiency, long life, and less material.;Warranty period: 36 months.;95% lumen maintenance. Philips T5 HO lamps are environmentally-responsible, ultra-slim and have extraordinary light output and longer life. Reduced maintenance and disposal costs.;Long life for an extended relamping cycle.;35,000 hours rated average life*.;Up to 70% more lumens than standard Standard T5 lamps.;95% lumen maintenance.;Reduces the impact on the environment: low mercury, energy efficiency, long life, and less material.;Only 1.4 mg of mercury, the lowest in the industry.;With just 12 Picograms per lumen hour, these lamps allow for more design freedom and help exceed all LEED requirements?.;24, 39, 54 and 80 Watt with 3000, 3500, 4100, 5000, and 6500 Color Temperatures. Ideal for medium-bay and high-bay retail and industrial applications.