Abstract: A rigid, glass panel, infra-red heating element is operatively disposed between the side portions and adjacent the back portion of an elongated open-sided housing. The side portions of the housing extend along the opposed edges of the back portion. An elongated supporting element extends between the side portions and across the side of the glass panel heating element opposite the back portion. The supporting element has sufficient strength to hold the glass panel within the housing in the event that the glass of the panel shatters, thereby becoming flexible and in a sagging condition.