The difference between the narrow laneway shelf and the double depth shelf is: double depth shelf is the type of shelf stored in double rows side by side, the warehouse utilization rate is about 42%, and the double depth shelf laneway should be designed according to the forklift, but in order to get the goods inside, Need to use a scissor lift truck. Narrow roadway forklifts are generally two sets of shelves. A pair of guide rails are installed between the two groups. The space utilization ratio of the warehouse can be increased by about 20% compared with ordinary shelves. However, due to the narrow roadway, three-way stacker trucks and forklifts are required. The cost is relatively high. The biggest difference between the two is that the used forklifts are not the same, the double depth shelves are four back to back, and there is no lower rail.