We searched high and low for information on those puck lights! The best answer we came up with was to buy the whole assembly because we couldn't find the lens covers ANYWHERE. We got ours from Peddler RV in Bakersfield, CA (they mailed them to us), and they were somewhere around $14 for each assembly. I imagine you could probably find someplace (maybe that made stained glass windows etc.?) that could cut some glass lenses for you, but we gave up and bought a few assemblies figuring we'd need parts down the line anyway.
John & Cathy Lamb
43' Winnebago Tour