HQRP 2-Pack Active HEPA Filter compatible with Miele SF-AH50 / SF-AH 50 / AH 50/05996883 Replacement airclean SF-AA50 plus Coaster HQRP&reg; Active Hepa Filter plus HQRP&reg; Coaster; This filter is HEPA filtration and retains 99.99% of particles down to 0.3 micron. 100% Compatible with Original filter; 2 weeks DOA replacement warranty!