Today, on our 2013 Hyundai Elantra, well be test fitting the Yakima RocketBox, Pro 11, Roof Top Cargo Box, Part Number Y07193. Now, the roof rack system already assembled on to our vehicle, well begin our test fit by placing the cargo box on to the vehicles crossbars. Well then unlock the box, exposing the four red T-handles and the black knobs.Well loosen up the black knobs to adjust the claws to… see more >