Very Narrow Aisle (VNA) Racking System is to meet the new generation of warehouses up to 17 meters high, designed around the operating tolerances of VNA equipment with aisles marginally wider than the load. Such structures must have a high level of rigidity and accurate manufacturing tolerance. Good stock rotation which is clear and easier to find the inventory. Good order picking; 100% selectivity. Promotes rapid handling of all types of palletized goods. Increase by an additional 40% over Selective pallet Racking System. Uses guide rails or wire guidance for fast movement in the aisle.