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All stainless steel burners are not created equally. When comparing burner systems, there are a few key points to consider. Most manufacturers use stainless steel sheet metal to make their burner systems. However, they are prone to a process called burn-through, which the manufacturer's warranty does not cover – it protects sheet metal burners against rust-through, but does not cover against burn-through. 

Stainless Steel Sheet Metal

Cast Stainless Steel Burners

Fire Magic Burners

To combat burn-through, select manufacturers use CAST stainless steel burners, whose warranties do cover burn-through as well as rust-through, twisting, warping, and any other problems. One advantage of a cast stainless steel burner includes size. Compared side-by-side, it is obvious that a sheet metal burner is not as thick as a U.S. quarter, but a cast stainless steel burner is a full ¼-inch thick. Additionally, the placement of the burner ports on the side of the burner can make a difference. On the sheet metal burners, the ports are exposed to grease drippings and food particles, which can clog the ports and speed up the burn-through process. The cast burner is designed with a protective ridge so that drippings cannot contact the ports, helping to ward off deterioration.