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.. Air Purifier Accessory Type: Air Purifier Filter. Air Purifier Features: Quiet. Air Treatment Product Type: Air Purifier Accessory. Appliance Category: Air Purifiers. Appliance Series: Not Applicable. Brand Compatibility: Winix. Color Family: Whites. Model Compatibility: Winix 5300-2, C535 and AM90 Air Purifier. Pack Size: 1. Part Type: Filter. Particles Removed: Allergen,Dust,Odor,Smoke. Primary Filter Type: HEPA - True. Product Weight (lb.): 2.5 lb. Returnable: 90-Day. Product Depth (in.): 2.2 in. Product Height (in.): 16.6. Product Width (in.): 14.1