... , Flexible cargo access 2, high strength and durability 3. Easy install and assemble. Steel Rack Traditional pallet rack is a great ... -aisle selective racks systems. In fact, when compared to a conventional selective rack system, the same amount of storage can be acheived ... .(main size of product box/pallet)?3,How many bays/ sections you need ?4,How many layers for each bay/section that ...