Winix P300-5300 Replacement Filter (21HC4)
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. 5300-2 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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