... tall building.2.Profiles: aluminium alloy, 6063-T5, can be thermal break 3.Wall thickness: 1.2-2.0mm, ... can be customized,1.4mm for windows ,2.00 mm for ... The frame is stable and durable aluminum alloy . 2.fly screen material:fiberglass ,stainless steel ,nylon.3 ... Exterior bifold door with 1 sash or 2 sash Aluminum retractable insect screen,mosquito net, ...