Fresh air valve or Fresh valve ø80 with filter and telescopic tube 320-550mm Darco

Most problems with moisture, odors and vapor removal in houses are solved through exhaust shafts. At the same time, natural ventilation still does not work because of tight insulated windows. The simplest and most affordable solution to ensure sufficient air exchange is the installation of fresh air valves in exterior walls and on windows. A valve operating on pressure differences is able to supply the room with a large amount of outside air.