Self regulating ventilators
Forget the strings and control levers!
Fresh air ventilators that open and close themselves
Regulate the air flow stepless after
the outdoor temperature,
day and night, all the year round !
Self-regulating fresh air ventilators that adjusts airflow in relation to outdoor temperature.
This provides well-balanced fresh air ventilation adapted to seasonal variation.
Private studies, why do we need ventilation
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