Helps capture large airborne particles before passing through the HEPA filter, therefore maximizing the HEPA filter life. Also helps reduce common household odors. Should be replaced every one to three months. Filter Type: Activated Carbon Filter; Filtration Type: N/A; Filtration For: N/A; Width: N/A. Additional DetailsActivated Carbon Pre-Filter; Air Cleaner; Air Cleaner Filters; Air Purifier; Carbon Pre-Filter; Enviracaire; Filter; HONEYWELL; Contaminants; Allergens; Filters; Filtration; Purifiers
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