Winix P300-5300 Replacement Filter (21HC4)
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Winix P300-5300 Replacement Filter (21HC4)
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Winix P300 Replacement Filter 

Size 21 (Model 21HC4)--Fits the Winix P300 Medium Room Air Cleaner, WAC5300 and WAC6300 Models, as well as Discontinued Models WAC5000 and WAC5000B.

The Size 21 Winix P300 Replacement Filter Set offers up to 1 Full Year of Filtration, depending on the level of dust, mold, or odor-type pollutants in the home, room or office where the air purifier is being used. Average filter life is about 8 months. Fits Winix air cleaner models: P300, WAC5300, WAC6300, WAC5000, WAC5000B.

This filter set includes a 99.97% efficient certified true-HEPA filter and 4 odor-absorbing carbon pre-filters, which should be changed every 2-3 months for best results.  
**Please note that HEPA filter may not have blue border.

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