Hunter Fan Company H-HF850-VP Replacement Filter Value Pack with HEPA EcoSilver Pre-Filter for HP850UV Air Purifier Series, 3 Piece Set, White

EcoSilver® PRE-FILTER: Silver nanoparticles in the EcoSilver® pre-filter prevent the growth of microorganism on the filter, including bacteria and viruses REPLACEMENT TIME: Depending on air quality environment and usage, it is recommended to replace the filter every 6 months and the pre-filter every 3 months to help ensure the Hunter air purifier is running efficiently. WHAT'S INCLUDED: Hunter Fan Company H13 replacement filter package includes one (1) replacement filter and two (2) pre-filters.