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• Its main use is in habitable rooms where it operates continuously without noise and over a 24-hour period can extract a maximum of 2.5 litres of water/day even at low vapour pressures
The MK2 Passive vent provides an opening on a section of wall normal to airflow direction with an effective area well in excess of the minimum requirement. Airflow through the opening is controlled automatically by the intervening mineral wool slab and thereby avoids undue draughts. The moisture vapour pressure within a dwelling is always higher than the outside pressure therefore there will always be an escape of moisture vapour by the diffusion process through the Passive vent.
