Abstract: Laterally spaced apart, vertically disposed studs are each provided with a pair of latch-receiving slots disposed laterally and rearwardly of a longitudinally extending, panel-separating rib. A wall panel is disposed between each pair of adjacent studs and is provided with a pair of laterally spaced apart latch members. Each latch member is positioned on the panel to be insertable in and removable from one of the latch-receiving slots on each of the adjacent studs with the wall panel in an elevated position. With the wall panel in a lowered position, the latch members cannot escape through the slots and the panel is held against the studs.