US Patent 7226116 Recreational vehicle full wall slide-out

A mobile recreational vehicle includes a body enclosing a living area designed to serve as self-contained living quarters during recreational travel. The body is supported on at least one pair of wheels (and often two or more pairs). The vehicle includes a ceiling assembly, a floor assembly; and an elongated and adjustable ceiling support extending between the ceiling assembly and the floor assembly wherein the height of the support can be adjusted during installation. In some instances, the vehicle has a shortened full length slide-out to allow for additional sidewall ceiling support, and in some instances has a slide-out opening that has cambered upper edges to minimize sagging the opening.