Being joined together with rivets, this shelving can be fitted at their length, width and height randomly. • This type of shelving has a nice looking, fast and easy to disassemble and assemble without special tools. • The height can adjust on 38.1mm centers. • The shelf can be equipped with steel shelf, wood shelf or wire mesh deck. https://www.sinoracking.com/boltless-adjustable-industrial-warehouse-rack.html