50 PCS PM2.5 Activated Carbon Filters, 5 Layers Replaceable Anti Haze Filters, Protective Mouth Filter for Outdoor (50pcs)

Fast delivery, US warehouse delivery, USPS delivery within 7 days. 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 dust cover available in the market.