ASI just had an aluminum frame made and screwed it to the outside.

http://images.thesamba.com/vw/gallery/pix/1217821.jpg
http://www.2040-cars.com/_content/cars/images/80/975880/001.jpg

Jim

-----Original Message-----
From: Mike South
Sent: Wednesday, July 15, 2015 9:32 AM
To: vanagon@GERRY.VANAGON.COM
Subject: 50 50 slider in a Westy?

Anyone had luck making their own, for example?