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SIZE :3.1×4.7 inches, activated carbon filter is compatible with most mouth cover on the market. PACKAGE: 20 PCS filter.
HIGH-QUALITY MATERIALS: The anti haze filter paper filter is consists of 2 layers melt-blown fabric, 2 layers nonwoven fabric, and 1 layer of activated carbon. The five-layer filter system effectively avoids a certain range of airborne pollutants
APPLICATION: Activated carbon filter can effectively filter harmful substances, such as dust/fume/exhaust gas/pollen, and is suitable for most occasions
NOTE: The carbon filter cannot be cleaned. It is recommended to replace according to the time of use. If possible, please replace it within 1-2 days
Shipped from USA warehouse, fast delivery. If you have any questions, please feel free to contact us. We are always here for you