Carton flow rack is a storage system where cartons are fed from one side, and retrieved from the other. This system uses a combination of rails and wheels. The rails are built on a slight incline, higher on the side that is fed, so that the cartons move forward when they are loaded into the system.
All the cartons placed on a particular level must contain the same SKU and are managed using the First In First Out (FIFO) system.
Pallet flow rack is similar to carton flow rack, except pallets are being stored instead of cartons.