HEPA filters are not only popular with allergy sufferers. The air blown out of the vacuum cleaner is cleaner than the normal ambient air ^ This vacuum cleaner filter keeps small particles back complies with the European standard for air hygiene of HEPA class 12 ^ Make sure to use only original equipment manufacturer to ensure optimal filtering effect ^ For the vacuum cleaner series BSG6, BSGL3, BSGL4/VS06G, VSZ3 (Z3.0), VSZ4 (Z4.0)