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High-quality materials: Made of activated carbon and non-woven melt-blown filter cloth, 5 layers filter system effectively keep away from PM2.5 and a range of airborne contaminants
Size Measurement: Carbon filters size measures approx 4.72 x 3.15 inches, compatible with most dust, easy to insert or replace the original one
Easy to use: just put it in the PM2.5 filter opening. 1. Filter insert can not be cleaned and should be replaced every week. 2. When film or sticky sediment stains emerge, please replace the filter
Safety protection: Ideal to protect your mouth and face from Dust, Haze,Allergies,Pollution, Ash, Pollen, Gardening, Crafts, PM2.5, Vehicle Exhaust, Woodwork, Pollen Allergies, and Fumes
Activated Carbon Filters: 100% brand new and high quality. It's compatible with majority of mouth cover available in the market. NOTE:Delivery and arrive within 3-5 business days