5 Layer Filter - Ideal for adding that extra protection inside our 3D printed face masks, available for both adult and children's masks
Available for purchase in single or multiple units
These filters are active for approx 60 hours and then will need replacing. These are not washable.
PM2.5 Filter for face mask Anti Haze Mouth Mask Replaceable Filter-slice 5 Layers Non-woven Activated Carbon Filter Masks Gasket
Product function: can prevent dust, prevent haze, filter harmful substances
Product structure: 5 layers
Material: 3 layers of non-woven fabric;2 layer fusible spray cloth