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: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: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. 5m, and for distribution boards, it should not be less than 1. However, this height can be adjusted. Design requirements for low voltage distribution boxes cover NEC, IEC, and safety standards to ensure reliable, compliant electrical installations. When they fail, everything goes dark.