HQRP Circular Filter Set 4-Pack for Bissell PowerForce Bagless 6582, 6579, 65793, 65823, 6582R Vac Vacuum Cleaner Coaster HQRP&reg; Four Filters plus HQRP&reg; Coaster; This PP compound filter is H12 filtration class and retains 99.97% of particles down to 0.3 micron; Dimensions: up diameter: 3.73"; down diameter: 3.37"; height: 2.62" 100% Compatible with Original filter; 2 weeks DOA replacement warranty!