Non-standard cages are customized to a customer's own products and warehouse, and are less mature than standard cages, so design needs more care. Foldable cages carry heavy loads and run at high frequency; a design problem creates lasting headaches. Before buying, settle two points. First, stability. A cage is fundamentally a steel structure, and structural stability is the most critical design element. Uncertainty runs through design, manufacturing, and use; a reliability analysis before non-standard work is worth doing rather than guessing dimensions. Second, fit your own warehouse. Before buying, inventory the usable height, column and beam positions, floor load capacity, and projected cargo growth over the next two years — then decide the cage's outer size, stacking layers, and load rating. If unsure, send us these figures; Nanjing Tongnuo Storage Equipment Manufacturing Co., Ltd. technicians will design to your warehouse, raising utilization and lowering later failure risk.