Size 21 filter A compatible with Winix PlasmaWave Air Purifier Models 5300, 6300, 5300-2, 6300-2, C535, P300, 9000, 5000, 5000B H13 Medical Grade True HEPA Filter 115115 - Removes up to 99.97% of particles and impurities as small as 0.1 microns - Captures dust, pollen, pet dander, pet hair, and more - Medical grade filtration performance for clean room like efficiency Carbon Pre-Filters - Traps larger particles to reduce load on the HEPA stage - Extends the life of the True HEPA filter - Absorbs odors in the environment such as volatile organic compounds VOCs, tobacco smoke, and cooking odors Maintenance and replacement - For best performance, replace the HEPA filter (115115) every 12 months - Replace the carbon pre-filter every 3 months Use scenarios - Home with pets: reduce pet dander and hair in living spaces to improve air quality - Seasonal allergies: lower pollen and dust levels for easier breathing during high pollen periods - Kitchens and smoke exposure: minimize cooking odors and tobacco smoke for a fresher indoor environment Compatibility and fit - Designed to fit Winix PlasmaWave purifiers across the listed models - Size 21 filter A format ensures proper fit and seal within compatible units Performance highlights - High efficiency filtration for everyday air purification - Two-stage filtration (HEPA and carbon pre-filter) for comprehensive particle and odor control - Keeps purifier operating effectively by reducing particle load on the main filter