Winix 113250 Filter E (Size 25)
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The Winix 113250 Replacement Filter Set E/Size 25 comes with all the filters required for 1 year of operation. This filter set includes 1 True HEPA filter and 4 carbon pre-filters. For optimal performance, it is recommended to change the True HEPA Filter once every 12 months and the Carbon Filter once every 3 months.
Designed for use with Winix Air Purifier units P450 and B451.Approximate HEPA filter size is 18.9"(H) x 16.3"(W) x 1.2"(D)
Approximate Carbon filter size is 18.9"(H) x 16.3"(W) x 0.2"(D)