aluminum window 1) Elegant fashion and European style. European standard U groove, three rubber slots enable better water proof and air tight, and available in any sizes as per your needs 2) Surface treatment & color: Powder coating, anodizing, PVDF coating, Electrophoresis, mill finished, wooden coating, etc, and all colors depend on Buyer’s requirement. 3) Window frame: aluminium wall thickness: 1.4mm 4) Good air tightness and water / wind resistance 5) Glass: double (5mm+9a+5mm)or single glass 6) Hardware: made in China,of high quality 7) Packaging: 5mm foam layer inside and packed with hard cardboard which is suitable for container shipping. We also offer special package according to Buyer’s requiremen.