... safety for 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 doors4.surface treatment: ... WorkshopShowroomPackage&Loading Container Exterior bifold door with 1 sash or 2 sash Aluminum retractable insect screen,mosquito net,aluminum fly ...