STABILER-draught stabilizer, designed to be mounted in the horizontal section of the ventilation duct of natural or hybrid ventilation systems – directly behind a entilation grille. Main purpose of the device is to reduce an excessive extraction of air through the ventilation duct. It is constructed in a special way to allow the flow of extract air up to a certain limit. Small airflow meets low resistance. Every time the flow of air gets bigger and  rises above the limit, damper closes gradually and flow of air is reduced and maintained at the proper level. Maximum air flow rates are set in accordance with Polish regulations on ventilation. Accordingly, it is easy to determine which type of device is suitable for a given space to ventilate.

Draught stabilizer can be mounted behind a typical ventilation grille. In order to do so, remove the grille from its frame first, then fit the stabilizer’s frame behind the mounting frame of the grille and secure it with fitting foam. Stabilizer’s frame is equipped with special holes through which foam can be sprayed inside. After the foam is hardened, mount the stabilizer inside the frame and fit the ventilation grille back.