Schellenberg 46601 Universal Window Fan Passive Vent for Window Casement Starter Set/Twin Pack White

• 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

The Schellenberg universal window fans ensure a healthier indoor climate, despite closed windows or doors. With the help of constant air exchange, they reduce relative humidity as well as pollutants in the room air. The continuous fine ventilation, prevents mould formation on window sills and returns their original insulation properties to damp walls. Thanks to the improved indoor air, less energy is required to heat the rooms, which also allows you to save on heating and energy costs. The universal window fans are attached to the window casement of a plastic window in a few simple steps. For this, part of the rubber seal must be removed. The accessories required for assembly are included. The universal window fans do not require a power connection and are operated purely mechanically. They are comparable to more cost-intensive supply or exhaust air systems. We recommend mounting one window fan on different facade sides per 10 m² of living space to allow cross ventilation. Even a small door gap of 7 mm under the closed room door ensures cross-room air circulation. With a slider on the window fan, the air supply can be manually interrupted at any time.