Abstract: A rectangular sheet of extruded, twin-walled, fluted plastic fabricated from a polyethylene copolymer is scored with N parallel lines, wherein N is any odd number three (3) or greater. The sheet of plastic is then bent or otherwise configured along the N parallel lines to form N+1 panels. The first and last panels are snapped into place along the opposing sidewalls, respectively, of a shipping container. The intermediate panels are bent into N + 1 2 V-shaped configurations which together will hold the bottom portion of a load of dry particle materials which will be shipped or stored therein. The materials may be loaded and unloaded through parts.