Patent ID: 8485422

Claim:
A high density nesting packaging container comprising: a first and a second preformed, rigid U-shaped member, each U-shaped member having a U-shaped cross-section and configured for the first member to fit into the second member to form a rectangular cross-section container, each of the U-shaped members having a base wall, opposing side walls and a corner formed at an intersection of each opposing side wall and the base wall, the base, side walls and corners being rigid, the base wall having a thickness and having at least one slit formed therein, the at least one slit extending longitudinally along the base wall for a length and formed from an inner surface thereof into the thickness of the base wall, the at least one slit having opposing surfaces, the base wall being openable along the at least one slit so as to form a generally W-configuration cross-section such that the first and second U-shaped members are nestable with each other, wherein when the base wall is closed to the U-shaped cross-section, substantially the entirety of the opposing surfaces of the at least one slit abut one another along the length of the at least one slit to maintain the U-shaped member in the U-shaped cross-section.