Selective pallet racking had become universal with the beginning of the 20th century. Which is a storage system used to store products on pallets in a horizontal row, with a steel structure attached with bolts. The sizes of selective pallet racks vary; depending on stored goods shapes and sizes. And were used since the beginning at retail centers, storage and distribution facilities and other facilities as well. Using selective pallet racks means easier accessibility to storage at all time it also means easier control over inventory while products are quickly deployed and restocked. Nowadays selective pallet racks are used widely in retail business, wholesale stores and inventory rooms.