|Gas grills using liquid propane gas as fuel, out of portable metal tanks are quite common. The finest propane barbecue grills come from Weber, DCS, Twin Eagles, Alfresco, and Ducane. They usually feature enclosed carts with steel doors and stainless steel trim, handles and panels. Cooking systems offer seamless stainless steel burners. Cooking grates are usually of porcelain-enameled cast iron. These grills have spacious cooking areas along with warming racks, side burners, tool holders, enclosed tank storage area, precision fuel gage and heavy duty swivel casters.