Narrow Aisle (VNA) is the use of selective pallet racking in a tighter configuration to provide maximum space utilization within a storage facility. The equipment used to load unload pallets from this system does not turn in the aisle but just moves along it on a predetermined track the forks move sideways into the rack to access the pallet. These systems typically operate in conjunction with wire-guided rail-guided reach-truck systems. A wire-guided system consists of a wire embedded in the concrete floor that provides tracking for the reach-truck. A rail-guided system consists of angle iron bolted to the floor down the length of each row. The system is also installed at picking sections to achieve maximum picking efficiency.