Heavy-Duty Removable Lid Style (POC) Shipping Case with Three Lids…..This heavy-duty shipping case is manufactured to have multiple and totally separated compartments. All sections completely come apart to expose the inner content. Compartments can be customized for your specific requirements. Casters and forklift runners are available as well as locks and stacking options. Heavy-Duty shipping cases are designed to meet ATA ( Air Transport Association ) standards.