Product Description Energy efficient aluminium folding window price aluminium bi-folding best sale windows and doors Product details Standard/Certificate: Comply with AS2047,NFRC,DADE Glass Standard: Comply with AS2208 & ANSIZ97.1 Frame Material: Aluminium Alloy Glass choice: 5+12A+5mm tinted,Other Surface finish for aluminum: Powder coated meet AS 3715, Electrophoresis Color: Matt black;white;ultra silver;clear anodized;nature clean aluminium Type: Aluminium folding window Extrusion alloys: 6063-T5 profile with1.4-1.6mm thickness for wind