... level profile,Environmental friendly 3.Competitive price Sliding window with energy saving 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 ...