It includes an air flow stabilizer to protect against the inflow of too large a stream of fresh air. This is particularly useful in winter when there are large temperature differences between the interior and exterior, and which may result in unnecessary heat losses. The stabilizer takes the form of a membrane located in the ventilator or in the external air intake.
It automatically adjusts the inflow of fresh air depending on the level of relative humidity in the room. There is a polyamide strip bundle acting as the control element for opening and closing. The higher the relative humidity, the larger the opening and the greater the inflow of fresh air into the room. Very popular with customers due to the very low level of user intervention required.
Consists of two individual elements, each 125 mm wide. The ventilation flaps are equipped with different counterweights, which makes individual vents react according to the wind pressure. Fresh air from the outside is fed into the space between the sash and door frame. This air is pre-heated there and rises up to the vent, where it then enters the room. It is easy to install and does not require any special drilling and machining. You can install this inlet on an already assembled window.
This is the simplest vent type operated by the user. The user can manually adjust the vent position, opening or closing it to adjust the amount of air entering the room.