said by nunya:Most electrical supply houses will have them. FWIW, the coating does very little to actually improve the color. They also make replacement fluorescent spirals with mogul bases that are matched to a 175W MV ballast.
I added that advice because MV lamps are terribly inefficient (almost as bad as incandescent), and upgrading should always be a consideration.
I wished she installed a HID or at least a Sodium vapor for the rear of the house. The yard is way too big for a single 175W MV I had to double check that it was indeed on because it was so dim (she had the bulb replaced last year)
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