HQRP Exhaust HEPA Filter 2-Pack for Eureka AirSpeed AS1000A AS1001AX AS1052AX AS1050A AS1048A AS1101A AS1104A AS1104AX AS1061A ASM1050A ASM1156A SuctionSeal Vac Vacuum Cleaner Coaster HQRP&reg; Two Exhaust Filters plus HQRP&reg; Coaster; This filter is H13 filtration class and retains 99.99% of particles down to 0.3 micron; Filters should be changed every 3 to 6 months; 100% Compatible with Original filter; 2 weeks DOA replacement warranty!