Today on our 2011 Mazda 3 we'll be test fitting the Thule Force Medium Rooftop Cargo Box measuring 13 cubic feet in aeroskin black, part number th624. With a Thule Aeroblade roof rack system assembled onto our vehicle, we'll begin our test fit by placing the Force directly onto our load bars. Since the feet are already hanging out of the bottom of the box, we can adjust them as needed to fit… see more >