Each sash operates independently on its own track, allowing for flexible ventilation options. You can open the top sash for high ventilation, the bottom sash for airflow near the ground, or both for maximum airflow.
2.5 Track windows
Configuration: Imagine a fixed picture window in the center flanked by two operable windows on either side. Each operable window would have its own independent track for sliding or hinging open.
3 Track windows
Overall, 3-track windows are ideal for situations where you prioritize maximum ventilation, light control, and expansive views. They are a good choice for large rooms, patios, or areas where fresh air circulation is crucial.