Miele SF-HA 50 Active HEPA Filter for Models S8000-S8999, S6000-S6999, S5000-S5999, S4000-S4999, C2 Complete, C3 Complete, C1-C2 Compact. Product Information HEPA AirClean Filter with TimeStrip safely traps fine dust and allergens. Catches 99.95% of all viruses, bacteria, and particles.* * HEPA class 13 in accordance with DIN EN 1822/2011 HEPA With TimeStrip filter change indicator To maintain appliance performance, change the filter once a year Contents: 1 filter incl. for Complete C2, Complete C3, Compact C1, Compact C2. HEPA AIRCLEAN FILTER HEPA AirClean filter for those with allergies "With Miele, you can choose from three different exhaust filters." The HEPA AirClean filter filters even fine dust and allergens - ideal for those with house dust allergies. The timestrip lets you know when the filter should be changed.