Genuine Kenmore 83157 carbon pre-filters. Fits Kenmore air purifier models 85254, 53254. Reduces household odors from cooking, cleaning and smoking. Captures large particles before reaching HEPA filter, extending life of the HEPA filter Recommended to replace every three (3) months, or more often in harsh enviornments, for maximum efficiency. Package includes two (2) carbon pre-filters. Carbon Replacement for Kenmore 83157 Air Purifier Pre-Filter. Fits Kenmore air purifier models 85254, 53254. Reduces household odors from cooking, cleaning and smoking. Captures large particles before reaching filter, extending life of the filter. Recommended to replace every three (3) months, or more often in harsh enviornments, for maximum efficiency. Package includes two (2) carbon pre-filters.