NOIBN stands for Not Otherwise Indexed By Name. It is a catch-all designation used in the National Motor Freight Classification (NMFC) system for commodities that do not have a specific, named listing in the tariff schedule. Shippers use this code to determine freight classes and rates for unusual or newly manufactured goods.
Heard on the job
If the new synthetic resin isn't listed in the NMFC guide, just classify it as NOIBN and use the density to get the freight class.