Fresh-air valve, or Fresh valve ø150 with filter and telescopic pipe 350-580mm Darco

In most houses, the problem of moisture, odors, and steam exhaust is solved through exhaust shafts. At the same time, natural ventilation still does not work because of tight sealed windows. The simplest and most affordable solution to ensure sufficient air exchange is the installation of fresh-air valves in the exterior walls of rooms and on windows. A valve that operates on pressure differences is capable of supplying a large amount of outdoor air to the room.