The Model 2011 is the ultimate steel applied carriage door. It includes PERFECTLY SMOOTH industrial grade 20 gauge steel skin with ¾” EXTIRA trim boards providing 100% rot resistance. The base model includes vinyl back full thickness polystyrene insulation ( R Value = 7.45). Optional steel back with high R Value (13.45) injected urethane insulation is available. All models are available with arched top and glass top section options.