Black Metal Industrial Shelving Unit with 4 Adjustable Shelves 60-inch Height, EBSU5991 :  This Black Metal Industrial Shelving Unit with 4 Adjustable Shelves 60-inch Height has a frame made of steel for strength, four adjustable shelves, a 3,200 lb. capacity when the weight is evenly distributed across all shelves, and a black baked enamel finish for resistance to corrosion. It is suitable for organizing and storing items. The shelves are made of particle board supported by double-riveted beams and braces for strength, and adjust in 1-1/2&quot; increments to accommodate items of varying heights. The posts on this shelving unit have a two-piece design so it can be assembled vertically to create one 60 x 36 x 18 inch (H x W x D) unit, or assembled horizontally to create two 30 x 36 x 18 inch (H x W x D) units with two shelves each. (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) This shelving unit's rivet lock design requires no nuts or bolts for assembly. Assembly instructions are included, tools for assembly are not included.