Miele HEPA AirClean Filter SF-HA 50HEPA AirClean Filter with TimeStrip SF HA 50 Miele Active HEPA Filter (AH 50) for S4000 S5000 S6000 canisters Proven to retain 99. 99+% of dust particles, this HEPA filter is ideal for allergy and asthma sufferers and only needs to be replaced approximately once a year. Suitable for the following canister vacuum cleaners: S4 series, S5 series and S6 series. Name HEPA AirClean 50 (HA 50) for S4000 S5000 S6000 S8000 canisters Item Number 09616280