Fits all round Honeywell hepa air cleaners. Replace the prefilter every 3 months.
The activated carbon prefilter captures large airborne particles and helps reduce odors. Vapors are pulled by molecular action in to tiny pores and held. In manufacturing the carbon, the activation process creates millions of micropores. The pores are sized and formulated to remove common household VOC's.
Replaces filters 32002, 33002, 34002, 35002. Can be used as alternative to part HRF-AP1.