Zojirushi PA-FMC02 Replacement filter set which includes two replacement filters and two deodorizing filters for the PA-MTC14 Ultra Slim Air Purifier Please regularly check the surface of the HEPA type filter. If its color becomes similar to the sample color label affixed inside the main body of the unit, it is time to replace it. Easy to replace Please clean the Main Body and the Front Panel when changing the filters. Replacement Reminder Label included to fill in date changed and affix to product Instruction included