... 3.BSI ISO9001,CCC,BS6206,TNO EN12150. 65 series dulux casement Window:1. function:security, airtightness, watertightness,wind resistance, rain pervation ... insulated glass, pattern glass and so on.3. material: aluminum alloy, glass, upvc/pvc, plastic, wooden and so on4. ... alloy.Below are the aluminium windows available:65 SERIES CASEMENT ALUMINIUM WINDOWS40 SERIES HINGE ALUMINIUM WINDOWS50 SERIES HINGE ...