The 313 Series insulated door offers energy efficiency, durability and low maintenance at an economical price.  The exterior face of the door is constructed from woodgrain embossed, hot-dipped, galvanized steel, coated with a baked-on base coat and a white, almond or brown polyester top coat.  The door's interior is comprised of a rigid core of CFC and HCFC free polystyrene insulation, laminated to a back cover and finished with an attractive white polyethylene laminate.  This insulating core adds thermal efficiency and improves the smooth an quit operation of the system. 
     Closed-box center stiles add rigidity and are bonded to the insulation with a structural adhesive, eliminating the need for unsightly rust-promoting rivets.  A PVC, bulb-type bottom weatherseal protects against wind and rain infiltration.