3M Filtrete Hoover Final 04 Allergen Vacuum Filter Nullify Imported Fits vacuum models HOOVER* WindTunnel* (except Self-Propelled), Empower*, PowerMAX*, Tempo* Widepath* and select Fold Away* Bagless Uprights, including C1701900, U5014900, U5016900, U5018900, U5140900, U5144900, U5145900, U5146900, U5148900, U5150900, U52719RM, U52729RM, U53019RM, U53029RM, U5348911, U5402900, U5409955, U5416900, U54219RM, U5436950, U5438960, U5453900, U5458900, U5458910, U5460900, U5462900, U5467900, U5468900, U5470900, U5481980, U5491900, U5491950, UH30015, UH30030HD Models. Allergen filters help trap household dust. Vacuum Filters should be replaced every 30 to 60 days for optimium performance. All vacuum brand and model names are registered trademarks of vacuum manufacturers.