1) Door plant material: double layers, zinc-plated 2) Core department material: polyurethane3) Dimensions of door plant: a) Width: 2440mm-12000mm b) Height: 2130mm- 7300mm 6) Thickness of door plant: 50mm7) Coefficient of thermal resistance: R=14. 96, 18. 258) Surface polyester of door plant: white, almond color, brown (other colors can be arranged) 9) Track: 2" (51mm) and 3" and (76mm), both adopt 1.5-3mm thick hot zinc-plated stencil plate 10) Standard rail, low rail, high to promote rail, vertical to promote rail and oblique canopy promote rail11) The balanced system of external button reed, the working life of button reed is up to the job circulation 50,000-100,000 times12) The U vinyl sealing strip of the bottom prevents frostbite, damp proof and waterproof13) The side and the top take the trough sealing strip to seal14) Small door of pass way: many kinds of sizes available 15) Small observation window: many kinds of sizes available 16) Fire-retardant grade: A