元の名称記録: American Trailer World Corp.

A trailer comprising a base frame and a side-rail assembly secured to the base frame. The side-rail assembly comprises at least one top rail and at least one support element extending between the top rail and the base frame. The side-rail assembly is configured to shift between an erected configuration and a collapsed configuration. In the erected configuration, the top rail is positioned vertically above and spaced apart from the base frame. In the collapsed configuration, the top rail is positioned adjacent to the base frame.