Patent attributes
A frame can include front and back generally vertically and laterally extending frame members. The frame members can each have a generally trapezoidal configuration comprising a crossbeam portion extending generally laterally between two generally upwardly and laterally inwardly extending side leg portions. A rigid, non-collapsible shell can extend over the frame that is adapted to be supported on the truck body. The rigid, non-collapsible shell can include opposite side walls and a roof extending between the side walls. A plurality of posts can be attached to the frame through the roof, with each of the posts extending externally above the roof of the rigid, non-collapsible shell. A first rack can be attached to and can extend between at least two of the posts externally of the rigid, non-collapsible shell overlying the roof.