Gas Mask Filter NATO Specifications NBC for 40mm Gas Masks CBRN Filter with Longest Shelf Life. 20 Years

Made to NATO Specifications Proven design provides comprehensive protection from a wide range of NBC threats, smoke and particulates. Smoke respirator mask filter can be used in environments with as little as 17% oxygen Transform your gas mask into a reliable, fully-functioning, multi-use smoke hood with these filters. Designed to overcome smoke & particulates , these advanced filters can provide crucial hours of protection and clean air from some of the most common disasters faced by US citizens. Fits standard 40 mm gas mask 20 Year Shelf Life (Manufactured in 2020)