[Motoman]

Sergei, the interior walls of the CCD are aluminum including behind the galley and bathroom sink. I would think that it has the same clearcoat as the exterior skin since Airstream recommends the same cleaning and wax treatment as the exterior. I would call the customer service department and confirm that with them.

Regarding the high prices for stainless steel, I would check at a local sheet metal shop that does duct work for heating and air conditioning systems. I had a 24" X 24" tray made from stainless steel for our parrots cage, including bending, forming and spot welding the 1/2" raised edge around the perimeter and paid between $20 & $30. It was about five years ago. I thought the price was reasonable. I have some other stainless steel work to d behiond our kitchen stove. What cost were you quoted and for how big a panel?