Thule Car Roof Rack Cargo Boxes are available in an assortment of sizes ranging from 11 to 21 cubic foot carrying capacities. Thule Boxes fasten directly to all Thule, Yakima, Whispbar, Malone and factory installed roof rack crossbars and are available in a wide price range. Some Thule Cargo Boxes are available in black or silver, some are curbside opening, while others open on both sides. All Thule Boxes include locks, keys, mounting hardware and a Limited Lifetime Warranty. Please check our Thule Fit Guide to see which boxes are recommended for your vehicle. Thule Cargo Boxes for Thule Car Roof Racks are stocked, discounted and ready to ship at The Rack Warehouse. If you need help choosing a Thule Cargo Box to fit your vehicle and budget, please call us for assistance 800 272-5362.