Abstract: A thermoshield primarily intended to be used for protecting a wall from the heat that may develop by a free-standing heating appliance or space heater that may be situated in proximity to the wall. However, certain structure of the device may be adapted to be used for restingly supporting thereon the heating appliance, thus protecting a floor from the heat developed thereby. The thermoshield features a sub-assembly of particular construction which serves as a heat barrier in either of the above mentioned dispositions, and peculiar support structure for supporting the sub-assembly in place between the heating appliance and the wall to be protected. A significant feature of the support structure is that the sub-assembly remains absolutely unaltered by the implementation of the support structure.