NEW Festool Main Filter HF-SYS-AIR H/HEPAfor SYS AIR HEPA Functions Innovative filter design. The main filter features a unique TripleV shape with an extensive surface area, allowing it to capture more dust particles and deliver superior filtration performance. This design minimizes rapid clogging and extends the filter's lifespan. It offers the highest level of filtration available from Festool. TripleV: The specially designed main filter optimizes performance in compact spaces. This design