The Dorset combines a T-rail top rail, a mid-rail, 1.5" square pickets and a 2"x 3.5" bottom rail for a unique and stylish vinyl railing appearance. Manufactured from premium quality vinyl, the Dorset is a 42" vinyl railing system that is up to 50 percent thicker than the competition. The Dorset vinyl railing (WXR-T42R3-S8) is International Residential Code (IRC) and International Building Code (IBC) compliant and tested in accordance with ICC-ES AC174 standards as evaluated by PEI, Inc. Code Compliance Report PER-12049.