What does the "Converting" part represent?

This % is a rough estimate based on the production of an unprinted box/packaging. Ideally, it should be overridden by the user editing or creating a model to reflect the real converting cost % (the Index Builder user should get back with their supplier to find out). Converting cost is fixed over time in the Index Builder model - Fastmarkets does understand that these costs do change somewhat, however, the goal of the Index Builder is to track the effects of changes in prices or costs of the main materials used in making the end product (packaging).