Abstract: A unitary synthetic resin nest bottom is molded in one piece with living hinges between side portions and a bottom portion, so that the side portions may be hinged upwardly to accommodate one nest bottom that was molded in one mold to various width nests. A plurality of ribs are provided for reinforcing the nest bottom and for spacing the nest bottom from the nest.

Abstract: A shelf support bracket including a flat rectangular plate having opposite end edges and opposite side edges. Tabs extend outwardly from the plate in one direction for mounting same to a vertical column. Flanges extend outwardly from the side edges of the plate in a direction opposite to the tabs. The flanges have a length substantially less than the length of the side edges. The opposite ends of the flanges are provided with hooks which are spaced different distances from the plate end edges. This allows the plate to be inverted for selectively supporting a shelf on one or the other of the hooks to vary the elevation of the shelf.

Abstract: A security storage box for papers of a similar size, such as checks, is provided by a one piece molded container, one piece molded lid, and accessories such as a handle, key lock securing the lid to the container, adjustable interior partition wall to adjust the container for a different volume of papers, and a transparent envelope on one end wall of the container to secure identification cards. The container and lid are provided with various reinforcing ribs and flanges, and an interlocking structure to secure multiple lidded containers in a stacked position with like end walls aligned.

Abstract: A shelf for an order picking system includes a rectangular frame having front and rear rails with upwardly facing bottom support surfaces and uniformly spaced notches along the length thereof above the support surfaces. Track members extending across the frame between the rails have bottom end portions supported on the support surfaces and have end edge portions received in certain of the notches. The track members are selectively adjustable to different positions by placing the track member end edges in different notches.

Abstract: A plurality of identical open top containers may be vertically stacked or vertically adjacent containers may be rotated 180.degree. relative to a vertical axis and nested, for the transport of items, such as fish, involving liquid that is desirably drained from each container. Drainage from one container into a lower container and therefore contamination of the lower container is prevented by drain holes in each of the stacking feet communicating directly with the upper inlet end of a downwardly and outwardly sloping channel in the support portion of the next lower container, in the stacked position, with an integral flange extending continuously around the entire top periphery of each box overlying the channel for strength and continuity.

Abstract: A track member having a bottom end portion resting on an upper surface of a support flange has a clip member slidably attached thereto for movement between a locking position and a releasing position for respectively preventing or permitting upward movement of the rail end portion with respect to the support flange. In the locking position of the clip member, a projecting tongue engages the bottom surface of the support flange opposite from the upper surface area on which the track member bottom end portion is supported. In the releasing position of the clip member, the tongue is clear of the support flange.

Abstract: Each tray in a plurality of 90 degree nestable and stackable trays is formed with a specific key portion along the upper edge of the end walls and a corresponding specific groove and web structure along the lower edge of the end walls. A first group of trays has a specific key structure different from a second group of the trays, each group of trays having its own key structure. Trays of a first group cannot be stacked in vertical alignment with trays of the second group, since the key structure of the first group is adapted to be received by the web structure of the first group, and not by the web structure of the second group, and vice versa.

Abstract: A shelf mounting bracket includes a flat rectangular plate having top and bottom edges, and opposite side edges. Integral flanges extend from the side edges perpendicular to the plate and upwardly opening shelf support hooks are formed at the bottom end portions of the flanges. A pair of elongated slots is provided in the plate intermediate the top and bottom edges thereof. The slots are spaced-apart from one another and are elongated in a direction extending across the plate side edges. The slots are alignable with holes in a vertical column of a storage rack having a column front face against which the plate is positioned with the flanges extending along side faces of the column. Holes in the column are aligned with the slots and a U-shaped bolt has its threaded legs extending through the column holes and plate slots. Nuts received on the threaded legs hold the plate against the column.

Abstract: A shelf mounting bracket includes a flat rectangular plate having top and bottom edges and opposite side edges. Vertically-spaced mounting hooks are bent from the plate. Flanges are bent from the opposite side edges of the plate in the same direction as the mounting hooks, and the bottom end portions of the flanges are formed with shelf support hooks facing in an opposite direction from the bracket mounting hooks. The mounting hooks are adapted to be received in vertically-spaced holes in columns of a storage rack.