BNSF inherited Gunderson Maxi-Stack III's from both of its chief predecessors, Santa Fe and Burlington Northern. These former BN cars, both carrying the large BN "wrenches" logo (some BN cars carried a smaller version) have been renumbered BNSF with the use of a BNSF Mineral Red patch and new white numbers. Originally built to concentrate on domestic container service, the move toward 53' domestic containers and a huge increase in international container traffic has led BNSF's Maxi-IIIs to more of an international stack train service focus in recent years.