COMPATIBLE MODEL: 3-in-1 H13 True HEPA Replacement Filter compatible with Instant AP200 Medium Machine.Compare to F200 Filter. PACKAGE INCLUDED: 2 pack 3-in-1 Premium H13 True HEPA Replacement Filter, including Fine Pre-Filter, H13 Grade True HEPA Filter and High Efficiency Activated Carbon Filter. TRUE HEPA REPLACEMENT FILTER: H13 grade True HEPA filter helps to remove up to 99.97% of particles as small as 0.3 microns , protect you against sore throat. EASY NO-TOOL REPLACEMENT: Replacing the filter is very simple and does not require any tools. We recommend replacing the filter for at least 6-8 months or depending on usage and environment. AFTER-SALE WARRANTY: If you are willing to buy-we hope you are completely satisfied. We will provide a refund for each filter, but due to the personal nature of these products, once the product is used, we will not be able to accept returns unless quality issues. You can contact us at any time if you have any questions, we hope to provide you with the highest quality products and services.