Hi John,
I'm fairly sure the hatch acrylic was replaced by
hatchmasters.com/hatch-repair/. I just found their ad in Cruising World, and that reminded me of their name. They replace the lens, "glass", with marine grade acrylic just like the original. If you wanted a different material, they might do that too. We replaced them during a winter layup (indoors) while in Maine. They replaced any hardware needed as well.
Good luck, Drew