Abstract: A structure comprises uprights and connecting beams as well as wall panels and vertically spaced apart horizontal partitions inserted between said uprights and beams. To permit the structure to be assembled and disassembled without a need for tools, the wall panels are provided with vertical edge flanges, which extend into grooves formed in the uprights, the uprights are interlocked with the connecting beams, and the wall panels and horizontal partitions are held between upper and lower connecting beams against a vertical displacement.