HQRP HEPA Dust Cup Filter for Eureka 3270 Series 3271AVZ, 3271BLU, 3271BZ, 3272AV, 3275, 3276AZ, 3276BVZ, 3277AVZ, 3277AVZX, 3279AZ Upright Vacuum Coaster HQRP HEPA Dust Cup Filter Replacement; This filter is H13 filtration class and retains 99.99% of particles down to 0.3 micron. For optimum performance, change filter at least every 6 months. Compatible with Original filter; 2 weeks DOA replacement warranty!