Patent ID: 8388073

Claim:
A modular storage unit comprising: a top panel having a body with a top surface and bottom surface, a sidewall surrounding a peripheral edge of the top panel, and an engagement structure projecting from the bottom surface and spaced a predetermined distance apart from the sidewall by a gap, and a fastening through-hole formed in the top panel body having a circular shape and an orientation notch extending from an edge of the fastening through hole; a bottom panel having a body with a top surface and bottom surface, a sidewall surrounding a peripheral edge of the bottom panel, and an engagement structure projecting from the bottom surface and spaced a predetermined distance apart from the sidewall by a gap, and a fastening through-hole formed in the bottom panel body and having a circular shape and an orientation notch extending from an edge of the fastening through hole, wherein the bottom panel is positioned opposite the top panel; and opposed side panels, wherein each side panel is generally planar and includes a top edge, and opposed bottom edge, and side edges extending between the top edge and bottom edge and each side panel top edge and side panel bottom edge includes a plurality of stepped projections having a through hole formed therein, and a fastening through-hole formed in each side panel body and having a circular shape and an orientation notch extending from an edge of the fastening through-hole; wherein the side panel top edge stepped projection is disposed within the top panel gap and the side panel bottom edge is disposed within the bottom panel gap such that the top panel, bottom panel and opposed side panels are snap-fit assembled together; wherein the top panel and bottom panel engaging structures include a catch that is disposed in the corresponding side panel through-hole; and a twist-lock fastener used to fasten adjacent modular storage units together, wherein the twist lock includes a head, a shaft extending from the head, diametrically opposed protruding extending radially outward from a free end of the shaft and diametrically opposed detent members extending radially outward from an end of the shaft that is adjacent the head, and the protruding members are offset from the detent members by 90 degrees, such that the shank is disposed in any one of the fastening through-holes of the opposed sided panels or the fastening through-holes of the top or bottom panels, and rotation of the shaft engages the shaft detent member to lock the twist-lock fastener in place.