Filter-Monster branded replacement compatible with Kenmore 83378 air purifier pre-filter. Engineered to fit Kenmore air purifier models: 83202, 83200, 83230, 83354, 83355. Carbon reduces household odors from cooking, cleaning, smoking and pets. Also captures large particles before reaching filter, extending the life of the filter. Package contains 4 replacement pre-filters. Filter-Monster branded replacement compatible with Kenmore 83378 air purifier pre-filter. Engineered to fit Kenmore air purifier models: 83202, 83200, 83230, 83354, 83355. Carbon reduces household odors from cooking, cleaning, smoking and pets. Also captures large particles before reaching filter, extending the life of the filter. Recommended to replace every 3 months for maximum efficiency, or more often depending on air quality