This 36 x 12 x 74" wire shelving add-on unit expands an existing same-dimension starter unit by sharing a pair of upright posts rather than standing independently. Each unit ships complete with four shelves, two posts, and eight S-hook connectors — everything needed to add a full shelf tier without purchasing redundant hardware.

The add-on configuration suits warehouses, stockrooms, distribution centers, and retail back-of-house environments where maximizing linear or angular storage density matters. Straight-line, back-to-back, and right-angle (L-shape) arrangements are all supported, giving facilities flexibility to work around columns, walls, and floor constraints.

The unit weighs 43 lbs and is sold individually. Note that starter and add-on unit combinations are not rated for caster or mobile use. Additional shelves and accessories are available separately.