[HoosierDaddy]

Here is a pic of one of the walls removed from my Newell. I removed it in order to add a curved edge during the remodel before reinstalling. It is very high quality 3/4" plywood. They fasten the wall and ceiling via an aluminum strip that staples to the edge of the wall and rivets to the ceiling, outside wall and floor.
The second pic shows that wall after installation. You can also see some of the construction techniques Newell uses and that we used in the reconstruction.