Designed for H457ICAT1E Halo LED housing. You need a body, a fairing and an "alternator" (LED); Visit the Cooper Lighting website to find the housing with a guide to all compatible part numbers. I ordered some covers (and lamps) to try out the case. This finish was my second favorite. diffuses the light a little; not all their "solite" lenses are the same. If you want less diffuse light (creating more point light) go for the similar looking TL402WHS (which we chose). Lenses give you the best; it is average; and TL402WHS is minimal.
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