Narrow aisle pallet racking, also known as VNA shelves, specifically refers to the conventional beam racking systems used forklift three-way forklift system, compared with the conventional pallet racking system, the difference is that the roadway width of the narrow aisle pallet racking systemmuch smaller than conventional pallet racking systems, typically 1600-about 2000mm, space utilization and improved about 20%, the other on both sides of the channel can be set-oriented guard rail, thought that the three-way forklift with oriented purposes.