US Patent 10954058 Modular box assembly

A modular box assembly includes a box having a top end, an opposed bottom end, and side panels extending from the top end to the bottom end. A bottom panel is disposed at the bottom end such that the side panels and the bottom panel define a box cavity and the top end defines a box opening. A shoulder is attached to two side panel and extends inward from the side panels into the box cavity, wherein each shoulder is spaced from the top end a predetermined distance. A box top covers the box opening, the box top being selectively movable about and between a closed position and an open position. In the closed position, the top panel engages the shoulders to support the top panel, and in the closed position an upper surface of the top panel is substantially flush with the top end of the box.