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In this manner, are t5 and t10 bulbs interchangeable?
The main difference is in size…the T8 is one inch in diameter and everything else is divisible by that number: T5 = 5/8 inch, T6 = 6/8 inch, T8 = 1 inch, T10 = 1.25 inches (10/8), T12 = 1.5 inches in diameter (12/8). While the size is the main difference there are other differences that are worth mentioning.
Correspondingly, are t8 and t10 bulbs interchangeable?
The specs say it takes T8 bulbs, but the 36 inch bulbs that I like are T10. Do you think they will fit? The bulbs will fit. T12, T10, T8 and T6 all come in the same standard lengths.
T10 Bulbs / T10 Incandescent Lamps Commonly used in exit signs, showcases, picture lights, and illuminated display units, T10 incandescent bulbs are simple replacements for T10 lamps that have burned out. You can always choose to replace your T10 light bulb with LED.