Abstract: A gas burner head for bushing out or spreading a gas flame adapted for use in an oil burning firebox which comprises in combination with a gas delivery tube and an air power, forced air, surrounding, air delivery duct, a pair of closely adjacent plates spaced at right angles to the cylinder-axis of the nozzle of the gas delivery tube. The nozzle abutts the outer or spreading one of the plates and is circumferentially perforate on its upper sides in the space between the plates to deliver gas therebetween. The air delivery duct has an air discharge opening surrounding the outer edges of the plates which is of an area greater than that of said nozzle and spreading plate but providing relatively narrow circumscribing air passage therebetween. The areas of said plates are predominately circular with the outer spreading plate of smaller diameter than the inner nozzle plate.