Single-layer, double-glazing glass, or double-glazing glass with manual louver.
The opening direction of in-opening tilting window is interior. When the window is in upper suspension status, it provides good ventilation. It attains the dual functions of in-opening and tilting. The user can achieve window inner open and upper suspension opening and closing through rotating the window handle.
Using thermal-break aluminium alloy, it has higher performance of heat-insulation and sound-insulation
