18 x7 aluminum sheet and post (truck body), .040 aluminum sidewall, 12" aluminum front radius z shaped galvanized side posts on 16" centers, 5" extruded aluminum vertical corners, 2 x 5 tube long sills, 3" I beam crossmembers on 12 " centers full undercoating, 1 1/8" laminated hardwood floor, composite rear roll up door with stainless steel fasterners, 10 tie rings 2 grab handles. contact Steve Adams 724 594 5933