Patent ID: 8302788

Claim:
A demountable shelving unit, comprising: first and second planar, vertically oriented end units and a plurality of planar, horizontally oriented shelf units removably connected between and orthogonal to the end units; each end unit comprising front and rear open-channel upright supports and upper and lower crossbars slidably received within the upright supports; each open-channel upright support having an undivided outer face and an opposing divided inner face defining a slot comprising by first and second flanges on opposing sides of the slot extending substantially perpendicular to and away from the outer and inner faces; each cross bar comprising front and rear upright insertion blocks and a horizontal connector; for each end unit, the front upright insertion block is slidably captured within the front upright support, the rear upright insertion block is slidably captured within the rear upright support, and the horizontal connector extends through the slots of the front and rear uprights supports; wherein each end unit further comprises: at least one diagonal support extending diagonally between the front and rear upright supports and through the slots of the front and rear upright supports; the diagonal support comprising a front end face angled to be aligned with the outer face of the front upright support and a rear end face angled to be aligned with the outer face of the rear upright support; a first threaded fastener extending through the outer face of the front upright support and through the front end face of the diagonal support securing the diagonal support to the front upright support; a second threaded fastener extending through the outer face of the rear upright support and through the rear end face of the diagonal support securing the diagonal support to the rear upright support; and wherein for each upright support: the diagonal support comprises a first flange clip engaging the first flange to secure the first flange between the diagonal support and the first flange clip; and the diagonal support comprises a second flange clip engaging the second flange to secure the second flange between the diagonal support and the second flange clip.