Abstract: A closure wall assembly comprises a pair of horizontal framing members spaced from each other and at least a pair of vertical framing members also spaced from each other and extending between the horizontal framing members. The framing members comprise a web and a plurality of elongate flanges spaced from each other and extending in a direction substantially perpendicular to the plane of the web and at least one of the faces of the web to define a plurality of elongate channels in substantially side by side relationship to each other. The respective channels have widths which differ from each other so as to be able to selectively receive the edges of substantially rigid sheets of closure material of differing widths. Female elongate receptacles are located adjacent the edges of the web and the receptacles have an elongate opening spaced from the edges of the web.