3 Pack PECO Replacement Filters Compatible with Molekule Air Purifier, Include 1 Pack PECO-Filter and 2 Pack Pre-Filter

【ACTIVATED CARBON PRE-FILTER】: Activated carbon filter can reduce unwanted gaseous substances such as pet odors, cooking smells and other unpleasant household odors. Its pleated design increases surface area to provide more efficient pre-filtration. 【ACTIVATED CARBON PRE-FILTER】: Activated carbon filter can reduce unwanted gaseous substances such as pet odors, cooking smells and other unpleasant household odors. Its pleated design increases surface area to provide more efficient pre-filtration. HEPA Filtration System: Used with HEPA layer and effectively attach 99.97% of airborne particles as small as 0.3microns, includes dust, smoke, pollen, pet hair and dander and etc :【Advanced PECO-Filter】: Advanced PECO-Filter: It is recommended to replace the True HEPA Filter once every 6-12 months and the Carbon Filter every 3 months or dependent on the usage. 【combo pack】:include 1Pack PECO-Filter and 2 Pack Pre-Filters.include 1 Pack PECO-Filter and 2 Pack Pre-Filters compatible with Molekule Air. To Keep your machine at optimal performance, please replace the filter regularly.