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The HEPA 11 filter screen is a high-density pleated filter paper. It has a dense, intertwined design which effectively reduces wind resistance, and increase air intake at the same time. The more it is used, the drier it becomes, which prevents moisture. The absorption capacity of PM2.5 particles is as high as 98.4%. This is more effective in filtering dust, pollen, particles, hair, and secondhand smoke.
