3M 7000002060 Particulate Respirators are specialty masks designed to protect against mold and silica hazards. They are maintenance-free and suitable for use in welding-free environments. With an R95 filter class, they provide particulate protection and help reduce nuisance odors from organic vapors. Each box contains 20 respirators with a standard size and a shelf life of 5 years. The braided comfort strap and soft faceseal/nosefoam ensure a comfortable fit. These respirators are made with advanced electrostatic media and have a total of 120 units per case.