[Compatible for vacuum cleaner] The vacuum cleaner filter SET is compatible with the following vacuum cleaners: Compact C1, Compact C2, Complete C2, Complete C3, as well as the S4000, S5000, S6000 & S8000 series.Alternative replaced: -HA 50 / -AH 50, -AP 50, -AA 50, -SA 50 / SA- 50 [HEPA-13 protection against fine dust] The HEPA H13 floating fabric filter is used to separate impurities present in the exhaust air of your vacuum cleaner. It enlarges the suction area and increases the suction power of the vacuum cleaner. It filters; 99.95% of all fine dust particles down to 1 µm (= 0.001 mm) such as dust, smoke particles, bacteria, pollen, mites, hair, flying dust and small particles. [Activated Carbon for Odor Isolation] The built-in activated carbon filter reacts chemically with surfaces to eliminate or inhibit odors, chemicals, etc., especially household odors from pets, cat litter and pet carpets. It not only cleans carpets, but also helps filter carpet grease and odor diffusion.