Note: One purchase will provide you with two filters. You do not have to purchase two new separate filters.
Triple layered filters has been tested under vigorous condition. Guarantee quality – Three layer multi filtering, and using patented High efficiency nano air pollution cleansing technology. Remove Nox, Sox, Pollen, PM2.5, TVOC, bacteria, virus, odor, ozone. To be used for HA500 air purifier.