Black N95 Filter sheets for AiruFlo masks, especially for Stealth Black version (Refill pack). These filters are also compatible with our other AiruFlo masks. 1 pack comes with 5 pairs of Black N95 filter sheets and 5 pieces of Black N95 bottom filters (15 pcs in total).    Our N95 filter sheets protect against 95% of 0.3μm ..

N95 Filter sheets for AiruFlo masks (Refill pack) 1 pack comes with 5 pairs of N95 filter sheets and 5 pieces of N95 bottom filters (15 pcs in total).    Our N95 filter sheets protect against 95% of 0.3μm particles and dust and have been tested for BFE (bacterial filtration efficiency) ≥99.7% and PFE (particle filtration eff..

Copper Oxide Filter sheets for AiruFlo masks (Refill pack) 1 pack comes with 5 pairs of Copper Oxide filter sheets and 5 pieces of Copper Oxide bottom filters (15 pcs in total).    Our Copper Oxide filter sheets are tri-layered, with non-woven material outer layers coated with copper oxide nanoparticles to prevent viral repl..