We were approached by a large manufacturer of polymer containers with the task of building an effective warehouse system for storing goods on pallets. All pallets have standard dimensions of 800x1200x2800 mm, and the warehouse area is quite large — these are the optimal conditions for the installation of Drive-in system. We have developed racks for PET-preforms consisting of 4 blocks. This made it possible to ensure a maximum storage density of 638 pallet places and save a sufficiently large space for the movement of warehouse equipment.