Edsal Ur-364Blk Heavy Duty Steel Industrial Shelving, 3200 Lbs Capacity,, Black This Edsal UR-364BLK shelving unit 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" 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. Edsal Manufacturing Company manufactures storage systems and industrial furniture. The company, founded in 1952, is headquartered in Chicago, IL. What's in the Box? (4) Shelf, particle board, 35-29/32" x 18" (W x D) (8) Upright post, 30" (H) (8) Beam (8) Brace (4) Post coupler, 4" (H) Assembly instructions Shelving unit with four adjustable shelves and a 3,200 lb. capacity is suitable for organizing and storing items Frame is made of steel for strength Shelves are made of particle board supported by double-riveted beams and braces, and adjust in 1-1/2" increments to accommodate items of varying heights Frame has black baked enamel finish for resistance to corrosion Rivet lock design for assembly without nuts or bolts, instructions included, tools for assembly sold separately