Thanks for all the input on my upcoming smokehouse build! I think I may have the solution. I had a discussion w/ my machinist buddy last night during "Happy Hour" around the ole wood stove. I didn't realize aluminum and stainless steel both come in 4x8 or 5x10ft sheets. Aluminum melts at 1800F and stainless is almost indestructable. He has a buddy w/ a press that can shape and cut the sheets to fit the interior of the smoke house. He can get it at his cost. Should have prices later today. I'll let you know how it plays out. Thanks again for your thoughts.