A cantilever rack is a storage system for long, bulky, or irregular items like lumber, piping, and sheet goods. It features vertical columns with horizontal arms extending outward as cantilevers, providing unobstructed access without front columns. Arms may be adjustable and racks come in single- or double-sided layouts, with light to heavy-duty capacities depending on materials and arm length. Benefits include simplified forklift loading, flexible spacing, and efficient horizontal storage where pallet racking is impractical. Constructed mainly from steel with protective finishes, cantilever racks often include base anchoring and load-rating labels to enhance stability and safety.