3M Filtrete Regina P Allergen Vacuum Bag - 3 bags + 1 filter Fits vacuum models REGINA* HouseKeeper* Plus (H06105, H06106, H06107, H06205, H06206, H06207, H06304, H06305, H06306, H06307, H0326) Ultra, Regina* Plus and Whispurr* Uprights. Allergen bags help trap household dust. Vacuum Bags should be replaced every 30 to 60 days for optimium performance. All vacuum brand and model names are registered trademarks of vacuum manufacturers.