Made to measure: hook-and-loop or roll
Why does smoke get in through the window?
Smoke is a mix of gases and very small particles of soot and grime suspended in the air. When the wind carries smoke towards your window, an open window lets in both the particles and the smell. Insect mesh is no barrier at all to these particles.
What can a window filter do?
- It holds back some of the soot and grime particles. Windowsills and curtains darken less.
- It lessens the intensity of the smoke. Because fewer smoke particles get in, you feel the smoke less.
- It makes brief airing possible. In winter you can air the room briefly even at times when chimney smoke is heavy.
What can’t it do?
Smell is made of gas molecules in the air. These molecules are much smaller than the filter’s pores. That is why a window filter can reduce smells but cannot remove them completely. If there is a strong, constant source of smell (a nearby factory chimney or a garden where barbecues are always lit), it is best to keep the window shut at those times.
In situations such as fire, heavy smoke or a gas leak, a window filter gives no protection. In such cases, follow the warnings of the authorities.
