REINFORCED INTERLOCKING FRAME SYSTEM AND COMPONENTS THEREFOR

A structural assembly for a recreational vehicle includes a first structural frame member having a wall and a hollow space at least partially defined by the wall and a second structural frame member having a section thereof extended into the hollow space of the first structural frame member forming an internal interface with the wall of the first structural frame member. The assembly further includes a foam material located in the hollow space that fills a portion of the hollow space to thereby form a bearing member adjacent the section to restrict motion of the section relative to the wall and thereby to form an internal connection between the second structural frame member and the first structural frame member at the internal interface to secure the second structural frame member to the first structural frame member to form a recreational vehicle component.