10Pack Activated Carbon Filter 5 Layers Replaceable Anti Haze Filter Replaceable Filters Paper

Features: First layer of spunbond cloth filters micron-level dust. Second layer filters industrial pollutants, automobile exhaust, second-hand smoke, and pollen allergens. Third layer of activated carbon cloth filters micron-level dust. Fourth layer offers filter density for smaller material. Fifth layer of spunbond cloth filters out all kinds of harmful substances. Filter size: As the picture show Please note: 1. Filter insert can not be cleaned and should be replaced every 3-4 days 2. When film or sticky sediment stains emerge, please replace the filter.