1.excellent workmanship 2.easy to intall and matain 3.soundproof heatproof 4.easy to slide 1. Profile: aluminium alloy, 6063-T5, can be thermal break2. Wall thickness: 1.2, 1.4 1.6, 2.0mm, can be customized 3. Surface treatment: anodized, electrophoresis, powder coated, color can be customized. 4. Glass option: A. single glass: 5,6,8mm (clear/ tempered glass) B. double glazing: 5+ 6/9/12 +5mm C. ...