Nanofiber Valved Respirator Mask N99 NANOPAK

The NANOPAK N99 Nanofiber Respirator (Model NTP-390V) is a 5-layer high-efficiency protective mask designed for maximum filtration and comfortable breathing. Using an advanced nanofiber layer, it provides 99% filtration efficiency for particles down to 0.3 microns. The silicone exhalation valve reduces breathing resistance and heat buildup, making it suitable for extended daily use. This mask is manufactured by NanoPak and is approved by national and international laboratories, including Nelson Labs USA.