Compatibility: Our Af-20Fl True Hepa Filter Replacement Compatible With Homedics Air Purifier Af-20 Ap-25 Ar-20 Filte?Part Number Af-20Fl Ap-25Crf Af-25. | | Great Value Set: The Af-20 Filter Super Value Pack Included 2 Pack Hepa Filters + 4 Pack Carbon Pre-Filter, For Long Term Using At So Much More Reasonably Price. | | Upgraded Filtration: Our Af-25 Replacement Filter Adopt Pre-Filter + True Hepa Filter. Work And Fit Just As Well As The Same Brand. | | Long Filter Life: The Strict Production Process, From The Selection Of Raw Materials To The Professional Operation Of Production, Replacement Filters Are Made To Be Durable Efficient For Months. | | Please Replace Regularly To Keep Your Machine Fresh And Clean, For Best Results, Remove The Filter Once A Month And Clean With A Soft Brush Or Gently Vacuum. Feel Free To