HQRP Filter 4-Pack for Eureka Clean Living 3281 3281BZ, Powerline 2905A, Altima 2993 2993AV 2940 Upright Vac Vacuum Cleaner Coaster HQRP&reg; Four Filters plus HQRP&reg; Coaster; This glass fiber paper filter is H13 filtration class and retains 99.99% of particles down to 0.3 micron; Compatible with Original filter; 2 weeks DOA replacement warranty!