Add a substantial amount of space for your gear with the roomy yet aerodynamic RocketBox series. Designed with front-mounted hardware for better hatchback clearance, it is ideal for smaller cars, wagons and SUVs. The RocketBox includes SKS Locks and integrated push-button security to ensure the lid is secure to its base and your gear is safe. The quick-release mounting hardware is compatible with Yakima round, square, factory and aerodynamic crossbars with a spread of 24 in - 40 in.

RocketBox Pro 11: Weight: 38.00 lbs. Dimensions: L 89.00 in x W 24.00 in x H 16.00 in.

RocketBox Pro 12: Weight: 30.00 lbs. Dimensions: L 58.00 in x W 36.00 in x H 16.00 in.

RocketBox Pro 14: Weight: 40.00 lbs. Dimensions: L 74.00 in x W 33.00 in x H 16.00 in.

Yes, the durability of the sky box, SuperLatch™ security ensures your lid is secure to its base, and your gear is safe, and the skybox is Designed with internal lid stiffeners for added rigidity. It is also meant to work better with hatch backs with the tapered rear box design.

Because it has the ability to open on both sides (a big plus) it doesn't open to a 90 degree angle which other boxes do. However, it does open to at least a 45 degree angle or more than 6 inches. The elbow mechanism might be stiff since it is new and you might have to try and push the gears open manually which might take a bit of a push.

Yes, it has a built-in lock and key supplied on both sides.

I don't recall any assembly, just an adjustment for the different car top rail distances.