HRF-C2 html" title="Honeywell Air Purifier Filter Model # HRF-C1">Honeywell Air Purifier Filter Model # HRF-C1. Replace approximately every 6 months. The ProTec™ Antimicrobial treatment helps prevent mold growth, while Odor-Lock™ Filter Technology helps remove common household odors. The Honeywell Air Purifier Filter Model # HRF-C2 ...

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