VNA is Similar to Selective Pallet Racking. Narrow Aisle Pallet Racking is used for the storage of pallets with narrow aisles for specialized materials handling equipment to operate in. It provides full access to all pallets with stock rotation on "first in first out" principle with greater storage capacity in total pallets stored for a given floor area than Selective Racking. Narrow Aisle Pallet Racking requires special materials handling equipment operating in aisles with guide rails Make better use of storage space by 20%.customized made is available all the time.