The anatomy of a Casita frame. Imagine removing the fiberglass shell, standing on your rear bumper (the blue box), facing forward, and looking down, this is what you would see. Through the years stabilizers have transitioned into scissor jacks, but non of that is pictured. There are other changes too, like the rear bumper, but those won't affect the measurements needed to determine hitch fitment. The measurements that determine which hitch you need are between the frame rails pictured in red. Keep scrolling down.