BHQRP Active HEPA Filter compatible with Miele SF-AH50 SF-AH 50 AH 50 05996883 Replacement plus HQRP Coaster ReviewbP PP HQRP Active HEPA Filter compatible with Miele SF-AH50 SF-AH 50 AH 50 05996883 Replacement plus HQRP Coaster PHQRP® Active Hepa Filter plus HQRP® Coaster;PThis filter is HEPA filtration and retains 99.99 of particles down to 0.3 micron.