Most of the new shoplights are T8 although T12 tubes are still available. T5 shop lights are showing up now but cost significantly more.The pin orientation is the same in T8 and T12 so the tubes will fit either. Some fixtures, like the shop lights I have, which have electronic ballasts, will run both.There are good, inexpensive, selections of T8 tubes in many places such as Home Depot and hardware stores, not so much for t%, yet.
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