3M Filtrete Bissell Universal Antimicrobial Vacuum Bag - 3 bags Fits vacuum models BISSELL* 3500 Series, including PowerForce* (3522, 3525, 71Y7 Series) Lift-Off* (3554 Series), Plus* (3550, 3553 Series), PowerGlide* (3545 Series), Soft Body*, PowerPartner*, Harde Body*, PowerGroom*, Micro Lock* Uprights, PowerClean* (35401, 3540B Series), PureAir* (35402 Series), PureAir* Deluxe* (3541 Series) ProLite* (3560 Series), and PowerTrak* (6592 Series). 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.