8020 tslot aluminum extrusion frame. Size of extrusion is 1.5 inches/40 mm. Tons of fasteners, angle brackets, drop in nuts, spring loaded nuts included. Spare extrusion lengths are 33.5, 44, and a bunch of 8-13 inch pieces.

Size of built frame is 28.25 x 41.5 x 9.25 inches. It fits perfectly in the trunk of a 4 door Ford Bronco. Frame comes apart very easily if you don’t need this configuration.