... engineered for school ,house ,factory 1.profile:aluminium alloy6063-T5,powder coating (or anodizing) ... 5mm-18mmAluminium windows & doors ,curtain wall ,roller shutter,partition ,fixed shutter,handrailSuperior heat insulation & ... noise effectively.After surface processing, the window and door have strong weatherability, ageing ... Single/double hung,Sliding,Folding,Special opening styles and so on ...