Abstract: A casing for supporting a radiant refractory panel for surface-combustion heating, in the form of an open-topped ceramic box providing for admission of air and combustible gas as such or as a mixture, the panel being secured by an adhesive-bound glass or other refractory fibre wrapped to cover the join between panel and casing.
Abstract: A radiant having gas passages through which a combustible gas mixture can be passed for combustion at the surface of the radiant, characterised by an open high porosity structure of bonded refractory ceramic fibre and a surface configuration of square pyramids, with the gas passages between them.