The first layout (see Figure 5.16), is called flow-through and provides for the arrangement of the receiving zone and the shipping zone at opposite ends of the warehouse. This kind of layout is based on the supposition that the majority of load units traversing the warehouse will need the same operations and they should therefore be processed in the same sequence: the packages traverse the warehouse from one part (receiving zone) to the other (shipping zone), passing through the storage zone. The flow-through layout is suitable for long, narrow spaces through which transit a high number of packages.