Ta-Da! The test subject is prepared.
I had suspected a spanish cedar veneer of about 1/32".... boy, was I surprised. It didn't even have that. I would compare what is being touted as spanish cedar to nothing more than a wall paper type material. So thin, that it didn't even register on my "Incra" measuring tool.
None of the panels were sealed with anything such as silicone. The panels basically just sat in a groove.
Here's another picture of a cross sectioned piece.