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T8 Lamps

T8 Fluorescent Lamps

The 32-watt T8 lamp has become the standard for new construction and as a retrofit replacement for 40-watt T12 fluorescent lamps.  T8 fluorescent lamps are available in a variety of configurations. It is smaller in diameter than T12 lamps and can utilize a medium bi-pin base.  The T8 fluorescent lamp maintains a very high lumens-per-watt efficiency.  A single T8 lamp will product approximately 2,800 to 3,000 initial lumens.  The T8 lamp has a low mercury content.  The lamp has a coating on the inside of the glass wall that stops the glass and phosphors from absorbing mercury.  Since mercury absorption causes the lamp’s light output to depreciate over its life, the coating helps to keep light levels much closer to initial output—only 5% depreciation in the first 40% of its life.