FRESHAIR VALVE VELCO COTTAGE

The filter effectively prevents pollutants from entering the indoor air. Features • The exceptional particle removal efficiency of the Velco Cottage Vent Filter made from 3M Filtrete™ material is based on a small electrical charge within the filter fibers. The fibers attract and capture pollutants from incoming outdoor air like a magnet. • The electrical charge enables an open filter structure and low pressure drop. • According to VTT research, the Velco filter removes 100% of pollen and significantly reduces harmful fine particles. This product description is an automated translation of the original Finnish description.