Because the oven bears the Fontana name, you can rest assured that you're purchasing the most robust and durable construction on the market. The Prometeo utilizes solid-weld construction using 310 S Stainless Steel, the type of stainless usually reserved for forging and smelting applications. 310 S Stainless Steel provides solid corrosion resistance, excellent resistance to oxidation, and superior strength in temperatures up to 1150°C. With the Prometeo, you can cook with confidence, knowing that the oven will perform under the rigors of daily restaurant use for many years to come.