The Specs Volume: 18 ft³ / 510 litersExternal dimensions (in): 82.75 x 33.75 x 17.25External dimensions (cm): 210.18 x 85.72 x 43.81Internal dimensions (in): 77.5 x 29.5 x 15.25Internal dimensions (cm): 196.85 x 74.93 x 38.73Height off crossbar: 16.1 in / 40.89 cmLoad capacity: 165 lb / 75