ISO 18616-1:2016 specifies the four main types of reusable, rigid plastic distribution boxes for general purpose application in the fields of handling, transport, storage and display of products in distribution systems from the point of manufacture to the point of retail. ISO 18616-1:2016 specifies the four main types of reusable, rigid plastic distribution boxes for general purpose application in the fields of handling, transport, storage and display of products in distribution systems from the point of manufacture to the point of retail. ISO 18616-1:2016 specifies the four main types of reusable, rigid plastic distribution boxes for general purpose application in the fields of handling, transport, storage and display of products in distribution systems from the point of manufacture to the point of retail services: a) rigid. of national committee technical been bodies). The work of preparing International t e right Electrotechnical interested in federation on a subject committee. ISO 18616-1:2016 is designed for general purpose applications in a returnable transport system. It stipulates requirements for enclosure materials, installation dimensions, the mandatory "one equipment, one switch, one RCD" rule, mechanical structure, earthing systems. of national committee technical been bodies).