The Grainger website features boltless metal shelving components for building industrial shelving units. The components include posts, beams, braces, panels, and other accessories in various sizes and load capacities. The posts and beams are made of steel with a powder-coat finish. The shelves are made of steel wire, particleboard, steel, or wood. Load capacities range from 800 lbs to 5000 lbs per shelf. Components can be mixed and matched to create customizable shelving units for warehouses, retail stores, garages, and other applications. Shelves are adjustable on 1" increments. Assembly requires no tools or hardware.