HQRP Washable Dust Cup HEPA Filter and Exhaust Filter for Eureka Upright Vac DCF-21 /&nbsp;68931 / 68931A, EF-6/69963 / 83091-1 Replacement Coaster HQRP&reg; Washable Dust Cup HEPA Filter and Exhaust Filter + HQRP&reg; Coaster; These filters are H13 filtration class and retains 99.99% of particles down to 0.3 micron; 100% Compatible with Original filters; 2 weeks DOA replacement warranty!