Design 5 Portable Stack Rack Unique design with many available options permits storage of very long and heavy items. Stack up to five levels high or knock down when empty. Standard capacity 2,000-4,000 lbs. per rack. Heavier capacity available. Very useful for products like rolls of cloth, carpet, and other rolled goods, metal or plastic tubing, fluorescent lighting tubes, etc. Design 5 stack racks used to store long boxes. Drawing of Design 5 stack racks used to store large boxes. Design 5 stack rack used to store long rolls of material.