With a maximum structural payload capacity of 146 tons (133 tonnes), including tare weight, the 747-8 Freighter offers 16 percent more revenue cargo volume than the 747-400 Freighter. The additional 4,221 cubic feet (120 m3) of volume means the airplane can accommodate four additional main-deck pallets and three additional lower-hold pallets. The 747-8 Freighter enables operators to choose between carrying greater revenue payload-up to an additional 22 tons (20 tonnes). The airplane upholds its predecessor's legendary efficiency, with nearly equivalent trip costs and lower ton-mile costs. In fact, the 747-8 Freighter will enjoy the lowest ton-mile costs of any freighter, giving operators unmatched profit potential.