Abstract: A frame structure (1) having an open top and an open bottom is for mounting on a pallet (6) to form a plastics retaining wall. The side walls (2 and 3) of the frame have upwardly extending flanges (16, 16a and 17) at the top edge and downwardly extending flanges (7, 7a and 8) at the bottom edge. Two similar frame (1) are stackable, one on the other to extend the height of the wall with the downwardly extending flanges of the upper structure received between the upwardly extending flanges of the lower structure so that the flanges bridge both frames to restrain relative horizontal displacement therebetween. The flanges (7 and 16) have apically profiled edge parts (30) which snap engage between respective structures in forming the stack to restrain the upper frame from lifting relative to the lower frame. The frame strucutre may be collapsible to form a flat pack.

Abstract: A collapsible frame structure 1 for a rectangular retaining wall on a pallet 6 has an open top and an open bottom formed by side walls 3 and end walls 2. The end walls 2 are hinged at 4 to the side walls 3 and each end wall comprises two wall parts 2a, 2b which are pivotally connected by hinge members 12. The end wall parts 2a, 2b are displaceable inwardly between the side walls 3 so that the side walls and end wall parts are located in parallel planes to form a flat pack. The hinge members 12 are rigid and each has two pivotal connections, one on each wall part 2a, 2b so that when the structure is collapsed the hinge members accommodate for the thickness of the wall parts. When the structure is erect, flanges on the wall parts 2a, 2b abut the respective hinge members at positions thereof between the pivotal connections to restrain the wall parts from displacement outwardly from the rectangular configuration.