Lighting issues

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I was checking my lighting and figured out I should check it a lot more often.

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I have a Sylvania Metalarc M59 R M400/U metal halide I need to replace.  Also some fluorescent bulbs.  They use the R17D base which I guess means that Lowes does not sell them.  For the front of the building 96" R17D 95 watts and for the islands 72" R17D 85 watts.