I bought this to replace the original in my inventory of OttLight as I thought it had completely burned out. It turned out that the switch on my unit was worn and in need of repair, but afterwards it was obvious that this bulb didn't match Ott's and was a slightly warmer or duller colour. I went back to my original lightbulb as it still works but left it for the day it finally fails or I end up with another light that will last.
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