The High Pressure Cast Iron Burner replaces the propane burners in the round burner frames. This particular high pressure cast iron burner can handle a higher heat then our fry burner and a regulator with a higher PSI. The High Pressure Cast Iron Burner does include the shutter. Orifices for this cast iron burner are available for purchase (5235). This burner gives off a blue high heat flame. The face of this cast iron burner measures 4 inches in diameter.