Luus FSP-90 Dual Duckbill Burner Freestanding StockpotThe Freestanding Stockpot Boiler range is brilliant in its simplicity. Compact and sturdy, they are engineered to operate without the need for a flue or cooling system. A heavy duty one piece cast iron trivet paired with the flexibility of a duckbill or round burner allows for all day slow cooking and simmering of stocks, soups, and sauces.