Fixed or opening?
If you mean the portlights that open then that would be the 7x15s from Pompanette. They were originally manufactured by Gray. See Related Link.If you have a late model H27 with the large fixed portlights then I think you can replace with any good plexiglas. Here is an answer from 2001: "Replacement Submitted by John Kudera on 06/29/2001 at 08:29AM regarding Hunter 27_75-84 I bought replacements for my fixed ports from Mark Plastics at 909-735-7705 Corona CA. They fit like new and were easy to install."