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- T8 fluorescents have better light output over the life of the lamp than T12's.
- After 10,000 hours, T8 lamps are still running at 95% light output, unlike T12's, which are at only 85%. T8's also last up to 24,000 hours versus 20,000 hours for T12's.
- Fluorescent T8 Electronic fixtures give 40% more light output than T12 Energy Saving Magnetic. That's three T8 lamps for almost as much light as four T12!
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 Standard 400-watt metal halide fixtures rated for 36,000 initial lumens lose up to 45% of their lighting ability through depreciation and fixture inefficiencies. When compared to only a 6% loss of the T5HO Fluorescent High Bay rated for 20,000 initial lumens, the maintained lumen output is virtually the same.
A four-light 54-watt HO T5 high bay requires only 239 watts as compared to the metal halide which consumes 454 watts, a dramatic 50% savings in energy usage. In addition, the fluorescent high bay produces brighter, more even illumination with features like instant on, built-in switching and low-temperature operation.
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