1. It is made of 6063 - T5 aluminum alloy building profiles.
2. The surface is treated with Tiger powder imported from Austria.
3. It has an independent four - cavity design, with a wall thickness of 1.8 mm.
4. The heat - insulating broken bridge is equipped with PA66 nylon thermal insulation strips, delivering excellent heat - preservation performance.
5. The window sash opens in a side - sliding way, without occupying indoor space.