Schellenberg 46601 Universal Fensterlüfter Passive Ventilation for The Window Casement, Starter Set/Double Pack, White, Starterset

Continuous air circulation when the window is closed. For this purpose, a narrow part of the rubber seal on the window casement and on the window frame must be removed. The rubber seal can be reused at any time. Reduces humidity, CO2 and other pollutants in the room air Prevents mould formation on walls or window sills Reduces heating and energy costs due to drier air Easy to install on the window casement of plastic windows; visually unobtrusive, Weight: 0.4188782978 pounds, Manufacturer: Schellenberg