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5-Pack Replacement Honeywell 50250 - 50259 Series Air Purifier Pre-Filter - Compatible Honeywell HRF-APP1 PreFilter

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5-Pack Honeywell 50250 - 50259 Series Humidifier Filter  - Replaces Honeywell HRF-APP1 PreFilter. . Please check your filter to make sure it matches the image and description before ordering.

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I bought a 3-pack a few months ago and recently my wife bought a 5-pack.  In the 3-pack, two of the filters were fine.  All other filters had a strong chemical odor.  I used one overnight and the odor caused me to develop chest pain.  I suspect the black color was chemically dyed.  They are not genuine carbon filter.

Very strong odor - don't buy

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