The Winix A Replacement Filter Set (115115) includes a true HEPA filter and 4 carbon pre-filters, which will last you one full year. This true HEPA filter lasts up to 1 year and each carbon pre-filter lasts 3 months. Formerly known as a Size 21 filter, this set keeps your air clean for a full year. 

Filter Dimensions

Approximate filter dimensions:

• HEPA Filter: 16.4"(H) x 12.5"(W) x 1.25"(D)
• Carbon Filters (4): 16.4"(H) x 12.5"(W) x 0.7"(D)

Compatible Models

• PlasmaWave 5300 and 5300-2
• PlasmaWave 5500
• PlasmaWave 6300
• FresHome P300
• Also fits: 6300-2, AM90, C909, 9800 and C535

Customers who purchase this filter package will need to remove the cartridge provided with Winix air purifier and only use the HEPA and a carbon filter to catch particles and odors.