Created and maintained by a nonprofit organization called the National Motor Freight Traffic Association (NMFTA), National Motor Freight Classification (NMFC) is a classification system used for interstate, intrastate, and foreign commerce movement of LTL shipments. You can learn more on our freight classes pages.
The class determines the cost of the shipping. The lower the class, the lower the cost.
Yes. If your shipment can be stacked, it allows the carrier to fit more freight into their truck.