Kenmore UltraCare Replacement CF-1 Canister Vacuum Motor Filter 81002 Compatible with Genuine UltraCare Sears Kenmore CF-1 Pre-Motor Filter Fits Most Kenmore Canister Vacuum Cleaners Made Since 1995, including Progressive, Whispertone, and others Replaces Sears Part numbers; 86883, 81002, UC48731-12, UC487321, and AC37KAKTZ000 1 Filter Per Package Recommended to be replaced once every 6-12 months to maintain peak performance.