HQRP 2-Pack Active HEPA Filters fits AH 30 Miele S&nbsp;2181 / S2181 Titan, S768 Canister Vacuum Cleaner, AH-30 / SF-AH30 / 7226160 Replacement Coaster HQRP&reg; 2 Active Filters plus HQRP&reg; Coaster; This Active filter is HEPA and retains 99.97% of particles down to 0.3 micron; Compatible with Original filter; 2 weeks DOA replacement warranty!