Stackable boxes

A stackable box, comprising:

• a bottom, a pair of side walls, and a pair of end walls;
• said side walls being joined to said end walls, and said bottom being joined to said side and end walls, each of said end walls comprising a top edge and bottom edge which are substantially parallel to each other, said top and bottom edges including respective top and bottom, upwardly extending arches flanked by a respective pair of flats, each of said flats being located between one end of its associated upwardly extending arch and one of said vertical ends of said end walls, whereby when similar stackable boxes are stacked one on top of the other, said top edges of said end walls of the bottom box will mate with the bottom edges of said end walls of the top box, preventing relative lateral movement of said boxes, and said end walls will loosely grip the ends of said bottom, constraining said boxes against relative longitudinal movement;
• wherein said bottom arches of said end walls extend upwardly sufficiently to delineate gaps between said bottom edges of said end walls and said ends of said bottom;
• wherein said ends of said bottom include centrally located notches, the ends of said notches terminating outboard of said gaps, such that said ends of said bottom include tongues which are received in grooves in the interior surface of said end walls.

An apparatus, comprising:

• a first box and a second box, each of said boxes comprising:
• a bottom, a first side wall having top and bottom edges, and an opposing pair of end walls, each having top and bottom edges;
• said first side wall being joined to said end walls, and said bottom being joined to said first side wall and said end walls;
• and
• said top and bottom edges of said end walls each including an upwardly extending arched portion flanked by a pair of flats;
• wherein when said first box is stacked atop said second box, said top edges of said end walls of said second box mate with said bottom edges of said end walls of said first box, thereby preventing relative lateral movement of said boxes, and said end walls of said second box constrain said boxes against relative longitudinal movement;
• wherein said top edge of said side wall said flaps associated with said top edges of said end wall extending in a single, horizontal plane.

A stackable box, comprising:

• a bottom, a pair of side walls, and a pair of end walls;
• said side walls being joined to said end walls, and said bottom being joined to said side and end walls, each of said end walls comprising a top edge and bottom edge which are substantially parallel to each other, said top and bottom edges including respective top and bottom, upwardly extending arcs flanked by a respective pair of flats, each of said flats being located between one end of its associated upwardly extending arc and one of said vertical ends of said end walls, whereby when similar stackable boxes are stacked one on top of the other, said top edges of said end walls of the bottom box will mate with the bottom edges of said end walls of the top box, preventing relative lateral movement of said boxes, and said end walls will loosely grip the ends of said bottom, constraining said boxes against relative longitudinal movement;
• wherein each of said side walls includes a horizontal top edge and a horizontal bottom edge and vertical ends, said flats being substantially parallel to said top and bottom edges of said side walls;
• wherein the opposite ends of said side walls include vertical ends and the opposite ends said end walls include vertical ends, said side walls' vertical ends being joined to said end walls' vertical ends, and said vertical ends of said side walls and said vertical ends of said end walls are all of substantially the same height;
• wherein said side walls, said end walls, and said bottom are dimensioned to form a file holder;
• and
• hand holes formed in opposite walls of one of said side walls and said end walls and a pair of transverse file support bars affixed to the other of said side walls and said end walls.