DESC: Miele HEPA Filter Midsize + - S300 - S600 - 04854915 The Active H.E.P.A. (High-Efficiency Particulate Air) filter not only captures and retains tiny, lung-damaging particles (including dust mite feces and pollen), it also uses the same Generally Activated Charcoal filter (GAC) that the Active Air Clean filter uses to absorb odors. This Miele filter conforms to the new stringent European standard for filtration (EN 1822) which means that it actually traps 99.99 of all particles as tiny as 0.3 of a micron. This model is for the S300 - S600 Series Model: 04854915 Housewares Vacuums Miele Accessories