... New high-level profile,Environmental friendly 3.Competitive price Aluminium sliding window 1.Profile: a>Aluminium alloy 6063-T5 b ... >wall thickness:1.4mm-2.0mm c>Surface treatment:powder coating,Anodize or Electrophoresis.....2.Glass: ... seal doors and windows,soundproof,heat insulation, waterproof, airtight excellent c> Unique safety, practicality, perfect combination of doors and windows ...