(57) A knockdown cabinet structure formed of a plastics material comprising rear and side
support frames; each side frame being formed at one longitudinal edge with longitudinally
spaced apart tubular coupling lugs and longitudinally spaced apart, transversely directed
shelf support ledges; the rear frame being formed at two opposite longitudinal edges
thereof with two respective sets of coupling bosses, each set comprising longitudinally
spaced apart coupling bosses and with two respective sets of shelf engaging bosses,
each set comprising longitudinally spaced apart engaging bosses; and a plurality of
shelves, each shelf comprising a planar base, a pair of transversely directed, elongated
tubular edges, and a pair of side walls; the arrangement being such that upon assembly
the sets of coupling bosses respectively fit into the sets of coupling lugs of the
respective side frames, the sets of engaging bosses fit into respective end portions
of the tubular edges, and said side walls rest on said support ledges. There is also
disclosed a two-piece mould for use in the injection moulding of an elongated, substantially
planar object such as, for example, a shelf forming part of the cabinet structure.
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