Span-track is a unique, conveyor-like carton flow track. Span-Track sections can be added to any new or existing pallet rack, spanning and supported by the pallet rack beams. It has high capacity live storage up to 50lbs per ft. This takes advantage of the strength of the rack structure and makes maximum use of rack capacity since no shelves or intermediate supports are needed. Span-Track offers an economical, durable, high capacity alternative to plastic wheel track systems. It is economical to purchase and has very low maintenances.