Passive dehumidifier to increase room ventilation, helps prevent black mould.
The Passive Vapour Vent MK2 contains a permeable membrane within the main plastic circular tube. This encourages moisture migration due the differences between external and internal temperature and air pressure.
The membrane acts as a molecular sieve, allowing water vapour to pass to the outside whilst resisting rapid air movement and therefore heat loss. The vent is also fitted with a specially designed cowl which counteracts the detrimental effects of external wind on performance.
No moving parts
Works passively 24 hours a day (a passive dehumidifier)
Quiet operation (generates no noise)
Low installation cost
Available in standard, extendable or high rise version
U90/34 Through wall ventilator ducts
U90/340 Through wall ventilator ducts
Passive Vapour Vent MK2
Fitted with special integral rubber seal and compact cowl which alleviates the need for exterior access and allows installation from the interior.
350 - 600 mm