Today on our 2013 Chrysler Town & Country we'll be test fitting the Thule Sonic Medium Rooftop Cargo Box measuring 13 cubic feet in glossy black part number TH634B. With the factory roof rack system on our vehicle, we'll begin our test fit by placing the Thule Sonic directly onto our crossbars. With the feet hanging out of the bottom of the box, we can adjust them as necessary to fit around each… see more >