Honeywell Compatible 12" x 48-1/2" Charcoal Pre-Filters, 2-Pack (compare to Honeywell #35002) are each pre-cut to replace the pre-filter that comes in selected Honeywell Enviracaire® air purifiers (models listed below). Activated charcoal pre-filter reduces odors and captures large airborne particles before they reach the HEPA filter. Change pre-filter every 3 months, depending on use. Package contains two (2) Charcoal Pre-Filters (12" x 48-1/2" each).
Please see Owner's Manual tab for full instructions on changing the pre-filter, based on your Honeywell model.
NOTE: Do NOT immerse the pre-filter in water – it is NOT washable.