The Hallowell Boltless Shelving Add-On Unit is an industrial-grade steel system for storage and organization. It features a boltless design for easy assembly, with adjustable shelves for various needs. Made of heavy-duty steel with a powder coat finish, it supports 800 lbs per shelf. Use it standalone or with other units for a larger system. Dimensions are 36"W x 18"D x 84"H per section, and it ships unassembled. This unit offers sturdy, customizable storage for warehouses, garages, and retail stores.