Mi ensures continuous ventilation in homes to improve the indoor air quality. With a capacity of 300 cbm / h, the fresh air ventilator is suitable for areas up to 105 sqm. The device uses a variable-frequency DC drive that brings oxygen-rich outdoor air into the building. The built-in 3-stage filter cleanses this air from pollutants and pollen. Mi is minimalist in design and available in two models for wall or window mounting.