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Long Twin Tube

Long Twin tube compact fluorescent bulbs are useful for a variety of applications. For instance, they are used in warehouses to light up large work areas and in office spaces because there is no glare or shadow from the bulbs. The 'T' in the light bulb name stands for tube diameter; T5 light bulbs are 5/8 of an inch in diameter compared to T4 light bulbs which are 1/2 an inch. Typical colors are frosted, warm white, cool white and daylight. Light output is measured in lumens; electric power is measured in watts. Therefore, light output ranges from 440 to 756 lumens while it uses on average only 8 to 12 watts, making these tubes very economical. The lifetime of a long twin tube is 10,000 to 12,000 hours, making it a great time and money saver.