Compatibility - 115115 Size 21 Replacement Filter A Compatible with Winix PlasmaWave Air Purifier 115115 Size 21 Models C535 5300 6300 5300-2 6300-2 P300 AM90 WAC5500 WAC5500 WAC. 6300 and Fellowes AeraMax 290 300 DX95. Easy to replace and disposable, no tools required.High Quality - The 115115 HEPA filter captures 99.97% of airborne particulates, removing items like household dust, pet dander and pollen. Activated carbon filter removes odors from pets, smoking, cooking, and more.We recommend replacing the C535 HEPA filter every 6-12 months for optimal performance.This complete kit is easy to use and extends the life of your Winix 115115 C535 air purifier.Colour: whiteMaterial: plasticSize: 32cmPackage Contents:4 x HEPA FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.