Abstract: A gas heating appliance of the kind having a gripping handle through which fuel is supplied to a common feed pipe carrying a plurality of burners. Each burner has a separate nozzle branched off the feed pipe and a pair of opposing curved baffle walls are provided at each nozzle, the walls of each pair being separated by gaps at each nozzle, all the gaps being in mutual alignment. The appliance of the invention is particularly applicable to the heating of plastic foil type materials.