Today on our 2011 Jeep Wrangler we'll be test fitting the Thule Sonic Medium Rooftop Cargo Box with 13 cubic feet of space, glossy black in color, part number TH634B. With the Thule Guttered Roof Rack System on our vehicle, we'll begin our test fit by placing the cargo box up onto the vehicle's cross bars. After positioning the clamps over the bars we can unlock the box and open the lid exposing… see more >