... ,0.7mm.1.0mm MOQ: 10pcs Introduction:1) Slat option: 55,60,77,90,100mm2) Rail option: 80,100mm guide rail ... -T5 double-layer aluminum alloy with strength powder coating or aluminium slat with polyurethane inside or galvanized steel slat with polyurethane ... for garage door, industrial door, commercial door,residential security door. aluminium rollup door