A typical single-deep rack position costs between $40 and $50. The major advantage is full accessibility to all unit loads. The major disadvantage is the amount of space devoted to aisles - typically 50 to 60 percent of the available floor space. As a result, in cases where there are three or more pallets on-hand of a SKU, a storage method that houses at least two pallets in a facing perpendicular to the storage aisle is preferable.
Selective pallet rack might be considered the benchmark storage mode, against which other systems may be compared for advantages and disadvantages. Most storage systems benefit from the use of at least some selective pallet rack for SKUs whose storage requirement is less than three to five pallet loads.
