Today on our 2012 Toyota Sienna, we'll be testing the Thule Force medium rooftop cargo box, 13 cubic feet in aero black, part number TH624. Our Sienna has a factory roof rack system. We will begin our test set by placing our Thule Force directly onto our cross bars. With the seat already hanging out of the bottom of the box, we'll go ahead and fit them around the crossbars as we put our box… see more >