Added carbon layer helps filter out nuisance levels of ozone and organic vapors (less than OSHA PEL). Dura-Mesh® shell resists collapsing in heat and humidity. Exhalation valve.
Added carbon layer effectively filters out ozone and organic vapors. Dura-Mesh® shell holds up in extreme heat and humidity. Effective against most...
Added carbon layer helps filter out nuisance levels of ozone and organic vapors (less than OSHA PEL). Dura-Mesh® shell resists collapsing in heat and humidity. Exhalation valve.