The Honeywell HEPA 21500 HEPA Replacement Media Filter serves as a premier defense in capturing 99.97% of airborne particles as small as 0.3 microns. This HEPA filter is an excellent replacement that effectively reduces airborne allergens such as mites, mold spores, pet dander, smoke and dust. For the very best results, it is recommended that you replace your Honeywell 21500 HEPA Filter 1 to 3 years depending on your environmental conditions. Accept no imitations and achieve the ultimate in peace of mind with a Genuine OEM Honeywell product.
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