Our 6' x 6' x 16' welded tube frame ovens ad beyond durable welded with 3" steel tube with 3 inch thick walls with rock wool insulation sheeted with G90 galvanized sheet metal. The temperature probe is built into the inside wall of the oven to prevent damage. These ovens arrive at your facility set up, tuned and ready to cook once the gas is ran and power is wired in by a licensed contractor.