A backstop configured to be implemented on a shelf. The backstop includes a bottom portion, a back portion in continuous communication with a back edge of the bottom portion, and a plurality of prongs disposed along a front edge of the bottom portion.

A backstop configured to be implemented on a shelf. The backstop includes a bottom portion, a back portion in continuous communication with a back edge of the bottom portion, and a plurality of prongs disposed along a front edge of the bottom portion.

The present disclosure relates to a wall-mounted booklet rack with adjustable partitions, comprising a front plate, a back plate, and a bottom plate forming a U-shaped accommodating groove. The through holes of the front plate are aligned with the recesses on the back plate, and magnets embedded in the recesses position the partition rods. By adding, removing, or relocating the partitions, the size of the divided areas can be adjusted, enabling orderly classification and flexible adaptation of booklets, thereby improving retrieval efficiency and space utilization.

A set including a first panel, a second panel and a mechanical locking device for locking the first panel to the second panel, wherein the first panel includes a first edge surface, the second panel includes a second panel surface, the first edge surface is facing the second panel surface in a locked position of the first and the second panel, the mechanical locking device includes at least one rod-shaped element at the first edge surface, at least one insertion groove at the second panel surface, the rod-shaped element is configured to be inserted into the insertion groove, the insertion groove extends into the second panel surface at a second angle from the second panel surface, a back panel, and at least one locking gear configured to cooperate with the back panel and a first and/or second panel groove.