Cupboard, more particularly a bathroom cupboard

A cupboard frame comprising a plurality of hollow profiled rail sections fabricated from a single profile rail with inner and outer walls of substantially rigid material, said rail sections being arranged in end to end relationship to define said frame and being defined by a plurality of transverse slots cut into said rail from the outside of said frame through said outer wall to said inner wall, said inner wall constituting a continuous web integrally connecting said rail sections, wherein said web is bent at each of said slots so that adjacent rail sections are disposed at an angle to each other and terminal ends of said rail are disposed contiguous to each other to form a closed frame with said web forming a continuous inside wall of said frame and with said slots opened to form gaps which converge toward said inner wall between adjacent end faces of said rail sections;

• means for joining the contiguous terminal ends of said rail to each other;
• and
• a wedge-shaped connecting element arranged in each gap having converging side faces corresponding to the configuration of the gap, and at least one resilient locking element on each side face, said locking element being elastically deformable upon insertion of the connecting element into the gap, and wherein said locking element engages under the outer wall of the adjacent rail section without deforming or changing the position of the rail section and contacts said adjacent rail section only at said outer wall.