Differences: IATA Class-9 Consumer Commodity and DOT ORM-D

ORM-D is the Domestic Classification for ground shipments.  Class 9 is the classification by IATA for Air shipments.  The ORM-D rule has been extended to be used until December 31, 2020. As of January 1, 2021 it will no longer be used and you will have to ship using the limited quantity exception.