A passive vent which can allow for natural airflow through otherwise sealed window frames. Once installed this vent can be opened to allow fresh air to enter the living space. The vent comes with an external cover, small filter and adjustable indoor grille. The cover will prevent water ingress and has a insect screen, the filter will remove impurities in the air and the adjustable grille allows you to open/close the vent as well as adjusting the direction of airflow.
Typically the vent will be installed in the upper part of the window frame.
Mounting & Installation Instructions