... aluminum material 3,Elegant designs 4,Competitive price Aluminum window,Profile:1.Aluminum window alloy 6063-T52.Material thickness:1.2mm/1 ... excellent structure design,New high-level -aluminum alloy doors and window is the new darling of the construction 2.Indoor and ... out off,insert a frame within the track of the seal doors and windows soundproof, heat insulation, waterproof,airtight excellent.3 ...