窄巷道貨架又稱VNA貨架，專指常規橫梁式貨架系統選用的叉車為三向叉車時的系統，其與常規托盤式貨架系統相比，窄巷道托盤式貨架系統的巷道寬度要比常規托盤式貨架系統小的多，一般為1600-2000mm左右，空間利用率又提高了20%左右，在通道兩側必須設置導向護軌或安裝地面磁感應，以為三向叉車行駛導向之用。
Very Narrow Aisle racking, also called VNA racking, refers to the storage system when three-direction forklift is used for common pallet racking system. Compared with common pallet racking, VNA racking has much narrower aisle (generally 1,600-2,000mm), so that the space utilization rate can be increased by 20% or so. In this system, guide rails or floor magnetic induction devices need to be installed on the two sides of channel to guide the direction of three-direction forklift.

叉車可在多巷道內靈活操作。
特殊VNA叉車可高速存取托盤。
窄巷道貨架系統提供了一種安全及免損的存儲環境。
必須考慮到消防和地震的特殊要求，耐磨和超平整的地面對重的靜載和動載而言也是必須的。
托盤位使用率高達95%接近100%，地面使用率達50%，且有很高的空間利用率。
Forklift can be operated flexibly in several aisles.
Special VNA forklifts can quickly deposit and take out pallets.
VNA racking system provides a safe and damage-free storage environment.
Special requirements of fire protection and earthquake protection should be considered, and wearable and super flat floor is necessary for heavy static load or dynamic load.
The pallet location use rate is as high as 95% to 100%, the floor use rate is up to 50%, and the space use rate is very high.