The cab for the thick glass envelope was made by David K (who is apparently bugsy90 here), and was posted
here. The post contains two zips, but the cabs are inside. Yes, you must sign up at that site to be able to download, but I do recommend it. Good forum as well as a good read at
FuzeMobility.
Thank you bugsy, btw. If you want to post the thick glass cab here, I'd be happy to post add it to the first post. Otherwise, I'll just leave the links pointing to your site, which I'd leave either way.