Photo 1 of ***one filter, 2 prefilters**LifeSupplyUSA True HEPA Filter Replacement Compatible with Winix PlasmaWave 115115, Size 21 Air Purifier

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Photo 1 of ***one filter, 2 prefilters**LifeSupplyUSA True HEPA Filter Replacement Compatible with Winix PlasmaWave 115115, Size 21 Air PurifierPhoto 2 of ***one filter, 2 prefilters**LifeSupplyUSA True HEPA Filter Replacement Compatible with Winix PlasmaWave 115115, Size 21 Air PurifierPhoto 3 of ***one filter, 2 prefilters**LifeSupplyUSA True HEPA Filter Replacement Compatible with Winix PlasmaWave 115115, Size 21 Air Purifier