Filters maintain vacuum cleaner performance while reducing the ingress of dust into the air you breathe.he filter holds out 99.5% of particles over 0.0003mm in size from the exhaust air. for allergy sufferers.FITS MODEL: SF-HA 50, Compatible with for Miele S4, S5, S6, S8, S8000, S8999, S6000, S6999, S5000, S5999, S4000, S4999, Complete C2, Complete C3, Compact C1, Compact C2 .DO NOT WORK with Classic C1 model This complete set provides enough cleaning replacements to improve air quality in your home, office and maximize your machine performance.Washable and Reusable. vacuum filter is consistent with the vacuum cleaner, which is easy to install and disassemble.Effect: High efficiency particulate and double-layer filter catch the invisible particles more efficiently, offer you a clean and fresh air environment. The high-efficiency HEPA filter can effectively block dust, hair, debris, pollen, etc. ensuring indoor hygiene.Material: plastic Package Contents:4 x HEPA filters