utilitarian auto glass companies
Check with any auto glass company in your area. They should be able to get you want you want quite easily. I live in a small city in western Canada and have a number of outlets where I can buy 3/8" plex, clear, smoked, translucent, white... whatever My truck cap has plex windows in the rear, side, and top front for the cargo light to shine through. The first two were replacements for broken glass, the last was a retrofit so that I could get light into the box with the lid on.
