Abstract: The present invention provides a multiple-partitioned shelf unit comprising a rigid open-ended shelf having a four-sided, substantially horizontal floor, a four-sided substantially horizontal ceiling, and means supporting said ceiling above said floor. The supporting means includes two spaced-apart upstanding members defining therebetween the horizontal extent of the shelf open end. The ceiling further includes a downwardly-extending lip. The free end of the lip and floor define therebetween the vertical extent of the shelf open end. The shelf unit further includes a fiberboard shell having an upstanding rear panel hingedly connected to two upstanding side panels. The shell is positioned within the shelf with said rear panel rearward of the shell's open end and the free ends of the side panels each being disposed at opposite ends of shelf open end, each adjacent and inward of one of the upstanding members, and at least a portion of each of the side panels extends behind the lip.