1.[Compatibility Model]The AP0601 replacement filter Compatible with AIRTOK machine. Part No.AP0601-RF, included 2 Pack, it's High-performance. NOTE: Please check the model before purchase.(NOT Fit for AIRTOK AP1001 Air Puri-fier). 2.[4-IN-1 Filter Design]Our AP0601 & AP0601-RF replacement filter for AIRTOK with a 4-in-1 H13 True HEPA . Include Nylon Pre-Filter, that can attach hair, lint, pet fur; H13 TRUE HEPA Filter get rid of smoke particles. High-efficiency Activated carbon filter quickly absorbs odors to improve the air quality. 3.[More Effective]Our AP0601-RF replacement filter & AP0601 filters attach 99.97% of particles as small as 0.3 microns ,such as household dust. The AP0601 replacement filter for AP0601 uses True HEPA technology , upgraded the previous simple filtering function. AP0601 air filter can be easily used in the office or at home. 4.[For Best Performance]Our AP0601-RF replacement filter & AP0601 filters can be installed easily without any tools. For performance, friendly recommended filter be replaced once every 6-8 months. H13 hepa filter for airtok to keep a y lifestyle with your family.