Compatibility: Compatible With Kenmore Filters. Engineered To Fit Kenmore Air Cleaner Models 85250 And 83250. | | Air Quality Improvement: True Hepa Filtration Is Rated H13 And Removes Up To 99.97% Of Airborne Particles As Small As 0.3 Microns In Size Including Dust, Smoke, Pollen, Pet Hair And Dander, Mold Spores And Dust Mites. | | Maintenance: Recommended To Change This Filter Once Every Six (6) Months Under Normal Conditions, And More Often Under Harsh Air Conditions. | |