Americana Building Products Insulated Door Canopy Insulated door canopy is fast and easy to assemble Structural roof panel consists of 2 outer layers of stucco-embossed aluminum; laminated to a 3" thick high-density, expanded polystyrene core Snap lock joint design creates a positive interlock where panels meet; eliminates unsightly mullions and leaves a clean, flush ceiling surface Extruded aluminum 2-piece mounting channel allows virtually any roof pitch, protects against wind movement and requires only 1-1/2" of mounting space