Edsal UR-364BLK Black Steel Industrial Shelving, 4 Adjustable Shelves, 3200 lb. Capacity, 60" Height x 36" Width x 18" Depth 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