• Premium 3-in-1 True HEPA filter replacement compatible with Winix air purifier NK100, NK105 and QS
• Compare to the original part 112180 N Filter
• 3 Stages Filtration: Activated Carbon pre filter prevents any large particles such as hair, debris, pet fur etc from getting side the air purifier. It also removes any household unfavorable Odors & harmful VOCs. High quality HEPA filter captures 99.97% of airborne particles down to 0.3 microns.
•  3 filters included. Suggest replacing the filter every 6 months the most to achieve the best result
• Size 8.75" x 8.75" x 11.5". Quality meets or exceeds the leading national brands.