The system consists of spaces saving storage units mounted on the manufacturer’s track-guided carriages to form a compact storage system. System design permits access to any single-aisle by moving units until the desired aisle is opened. The manufacturer’s proprietary unit interlock system prevents units from being moved while the open aisle is occupied. The carriage/rail system provides uniform carriage movement along the total length of travel, even with unbalanced loads. Architectural Revit Models