Pallet racks are storage systems designed to hold and organize pallets of goods in warehouses and distribution centers. They consist of vertical frames and horizontal beams that create multiple levels for stacking pallets, maximizing vertical space and improving accessibility. These racks come in various styles, such as selective, drive-in, and push-back, each suited for different storage needs. By using pallet racks, businesses can enhance inventory management, increase storage capacity, and streamline the picking process, ultimately leading to improved efficiency in operations.