Today on our 2010 Ford Flex, we'll be test fitting a Thule Force Medium rooftop cargo box, part number TH624. We'll begin our test fit by placing the cargo box on to the vehicles load bars. We'll unlock the box and open up the lid exposing the four knobs that control the clamps. If necessary, we'll adjust the clamps to fit the load bars spread of our vehicle.Once they have the clamps positioned… see more >