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What is the difference between a t8 and a t12 ballast?
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T5 vs T8 vs LED: The Best Options For Replacing Aging T-12 Fixtures
What is the difference between a t8 and a t12 ballast?
Difference Between T8 and T12 | Samsung Galaxy Blog
Is This The End of T12 Lamps and Ballasts? | USIlluminations
Is It OK to Use T8 LED Tubes to Replace the Old T10/T12 Tubes?
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