US Patent 10390634 Modular greeting card rack

A rack display comprising a base having a front panel with a plurality of horizontal and vertical slots included thereon; left and right side panels extending from sides of the front panel; a back panel extending between the left and right side panels; and one or more shelf members including horizontal and vertical tabs. The shelf members are secured to the base by inserting the vertical and horizontal tabs within the vertical and horizontal slots respectively. The rack display is erected from a knockdown configuration by securing the shelf members to the front panel of the base via insertion of the horizontal and vertical tabs within the horizontal and vertical slots respectively.