?MEDIHEALER SUPPLY - This filter kit is a generic product supplied by Medihealer! Your Satisfaction is our Highest Priority. If you have any questions about this item, please contact us without hesitation. ?CLEAN AIR FOR HEALTHIER LIFE - Our kit is designed so as to provide you and your loved ones with the cleanest air to maintain your health. ?FOAM POLLEN & ULTRA FINE - The foam version is to block large particulate matter. The ultra-fine version is to block fine particles. Use them together to provide the cleanest air. ?BENEFIT OF REUSABLE FILTER SLOTS - Reusable and easy to replace. They make filters for your machine more cost-effective and can reduce plastic pollution to be friendly to the environment. ?COST-EFFECTIVE ASSEMBLY FILTER KIT - 26 Pcs Foam Pollen Filters and 26 Pcs Ultra Fine Filters. Include totally 52 Pcs, replace every two weeks is highly recommended, one set satisfies your whole year needs.