A heating radiator 1 comprises a plurality of sections 2 made from extruded aluminium or an aluminium alloy, each section 2 comprising a base 4, a bridge 8 and a front portion 6. The sections 2 are joined along their longitudinal edge to form a base panel 20 which is heated to a high temperature by heating means 12. The front portion 6 is heated by conduction through the bridge 8 and so remains relatively cool. Air flows, by convection, through gaps 24, which may be louvred to exclude dust, between the front portions 6, and through the space between front portion 6 and base 4. When the sections 2 are oriented horizontally the bridge 8, or the base 4 may have perforations 10 to permit air- flow. Insulation 26 may be installed between the base panel 20 and the wall and the exposed surfaces may have a high emissivity coating. A free standing version of the radiator 1 may have identical front portions 6 and bridges 8 on both sides of the base panel 20.
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