I have a shop that came with the house I bought 4 years ago. It has mostly T8 and T12 4’. Bulbs. The office had solid state ballast units that would quit working after only a couple of years. I replaced the 4’ tubes with direct wire LEDs. This was much easier than replacing the ballast or the whole fixture for a new one since there are many fixtures hooked up with conduit. I’m Very happy with the light. Color temperature is 4k. So not to blue white.