Energy savings, extra long life, extra low mercury Save $32 in energy costs over the rated average life of the lamp** when compared to a standard 32W T8 lamp;Operates on any Instant Start and Programmed Start ballast***;Significantly reduce maintenance and recycling costs by extending the relamping cycle;Reduced impact on the environment without sacrificing performance;**When comparing Philips Energy Advantage T8 32W with 2400 lumens to a 4' industry standard 32W lamp with 2850 lumens. Based on wattage savings (7W) x rated average life (46,000 hours) x kWh rate ($.10).;***Starting voltage must be equal to or greater than 550V. These lamps should not be used where the temperature in fixture is below 70F. Striations may occur where air movement is present in fixture. For best operation, use ballast with anti-striation circuitry Philips Energy Advantage T8 Extra Long Life lamps are an industry first. These lamps offer high energy savings and have extra long life. Save 7 watts per lamp instantly when comparing an Energy Advantage T8 25W to a standard 32W T8 lamp;Only 1.7mg of mercury with ALTO II Technology;Significantly reduce maintenance and recycling costs by extending the relamping cycle;Available in multiple color temperatures: 3000K, 3500K, 4100K, and 5000K Ideal for applications where energy savings and longer relamp cycles would be beneficial.