Excalibur 32 inch 4 burner built in grill (NATURAL GAS)#GG-32-NG The grill is constructed of heavy duty stainless steel top to bottom, resistance against salt, heat, water and food condiments. Grill grates are #304 Stainless steel and are 8 mil in thickness. The burners are 15,000 BTU welded stainless burners. Valves are flame thrower style and are very dependable. Dual lined hood with temp gauge.