The Winix Ultimate Size 21 4-Stage Replacement Filter Cartridge (114190) includes an antibacterial pre-filter, a true HEPA washable filter, a mesh shield, and an activated carbon filter. These filters are all washable and re-usable, and they work together to absorb odors and capture the tiniest allergen particles in your space. Wash them every 3 months for best results. This replacement filter cartridge is ideal for your Winix air purifier if you want to wash and re-use filters without having to replace them every 3 months. Generally, the filters can be washed up to 6 times without needing to be replaced, but check them after each wash to ensure they're still in good condition.
- Simple installation
- Provides one full year of filtration
- Designed to fit Winix PlasmaWave Air Cleaner models P300, 9500, 9000, 6300, 5000, 5300, 5500, and 5000B