Inner/Outer Circular filter assembly: includes 1 Inner Pleated Filter and 1 Outer Foam Filter. Easy Vac Series and PowerForce Compact Series Vacuums. PowerForce® Helix Turbo Bagless Vacuum 68C71, PowerForce® Helix Bagless Upright Vacuum 1240, PowerGroom® Helix Rewind Vacuum 98N4, PowerGroom® Bagless Vacuum Cleaner 68C77 and PowerForce® Helix™ Upright Bagless Vacuum 12B1