The Winix 115115 Replacement Filter A is a complete one year filter set. The True HEPA Filter captures 99.97% of particles and impurities as small as 0.3 microns， including pollen， mold， dust， pet dander and hair， other allergens and cigarette smoke. The 4-pack Carbon Filters traps large particles， extending the life of the True HEPA filter and absorbs odor in the environment. The genuine Winix Filter A is compatible with Winix Air Purifier units 6300， P300， 5300， 5300-2， 6300-2， and C535.

Use to replace worn out filters

Helps remove allergens and other airborne particles while absorbing odors and VOC's

Fits Winix air cleaner models 9000， 5000， 5000B， 5300，5500， P300 and 5300-2， AM90， C535

Includes 4 carbon pre-filters for year-round use

Recommended replacement schedule of carbon pre-filter is once every 3 months