Today on our 2013 Hyundai Sonata, we'll be test fitting the Thule Force XXL rooftop cargo box. That's part number TH626. This offers 21 cubic feet of space. With our Thule load bars already in place, we can go ahead and put our box on top. You want to make sure your clamps go over your load bars. What I like to do is I like to have one side of the locks up so I can make sure that's right.… see more >