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. The box is usually made of steel or plastic. Steel is strong and durable, great for tough environments. Choose based on where you'll install the box. The work of preparing International t e right Electrotechnical interested in federation on a subject committee. Where product fails to pass acceptance activities, the procedures for control of nonconforming product must be implemented to include investigations where defined. However, this height can be adjusted. IPC-A-630, titled “Acceptability Standard for Manufacture, Inspection, and Testing of Electronic Enclosures,” is the first and only IPC standard dedicated to box build assembly.