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The Honeywell Universal Carbon Pre-filter helps capture large airborne particles before passing through the HEPA filter, therefore maximizing the HEPA filter life. The activated carbon pre-filter also helps reduce common household odors.

• Replaces pre-filter numbers 32002, 33002, 34002 and 35002
• Should be replaced every 1-3 months of use
• Can be cut to make 1 to 3 pre-filters, depending on air purifier model
• Fits virtually all Honeywell Round, QuietCare and SilentComfort Series model air purifiers including: 17000,17005, 17006, 18150, 18155, 50100, 50200-N, 50250-N, HFD-110, and more.

*from the air that passes through the filter. Overall particle reduction is dependent on many factors, including the amount of air processed, the pollutant type and the pollutants' introduction rate into the environment