Through type shelving, also known as corridor shelving or drive in shelving. The through type shelf can be used for forklifts (or unmanned transport vehicles with forks) to enter and access goods in the channel, suitable for storing goods with small varieties and large quantities. In addition to the storage positions near the aisle, for through type shelves, forklifts need to enter the interior of the shelf to access goods, and it is usually recommended not to exceed a depth of 7 storage positions for single-sided pickup. To improve the operating speed of forklifts, guide rails can be selected according to actual needs. Compared with beam type shelves, through type shelves can increase the utilization rate of warehouse space by more than 30%. Through type shelves are widely used in wholesale, cold storage, food, and tobacco industries.