Moldex N95 Medium. Large Particulate Disposable Respirator has molded nose bridge with soft foam nose cushion allowing all day comfort and Softspun inner lining that adds comfort and durability. Respirator includes an added sorbent which helps to filter out nuisance levels of acid gas irritants. Respirator comes with exhalation valve that reduces hot air build up and Dura-Mesh shell which protects filter media and resists collapse even in heat and humidity so the respirator holds its shape longer. Respirator is NIOSH certified under 42CFR84 regulations to have filter efficiency level of 95% or greater against particulate aerosols free of oil up to 10XPEL. It can be used when oil aerosols are not present in industries such as aluminum reduction, paper mills