
Ventilation system
Modern windows are tight to keep tightness and noise isolation, but at the same to provide continuous inflow of fresh air it is necessary to use modern system of ventilation.
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Aluminium structures are used for production of windows, balconies, showcases, doors, facades, winter gardens, and much more. Recently Have Become Such structures very common. This is due to Their practicality, lightness, and presentable appearance.