HQRP Filter 4-Pack for Hoover U5175900 5175900 U5162911 5162911 U5164900 5164900 U5165900 5165900 Fold Away Upright Vac Vacuum Cleaner Coaster HQRP&reg; Washable & Reusable Hepa Filter plus HQRP&reg; Coaster; This filter is HEPA filtration class H12 and retains 99.97% of particles down to 0.3 micron. 100% Compatible with Original filter; 2 weeks DOA replacement warranty!