Panels and support bases are individually molded in one step. The support base features a grid pattern, with the top surface having reinforced ribs that extend in an arc. The two bottom surfaces are nested together to form a single unit, and screws are used to reinforce the assembly for enhanced fit. The design allows for forklift access from four sides, making it suitable for stacking and shelf use. For ease of transportation, the top and bottom can be separated for shipment, saving space and transportation costs.