Collapse-resistant Dura-Mesh® shell lasts longer. Respirators feature added sorbent to filter out nuisance levels of Ozone and Organic Vapors. Exhalation valve reduces hot-air buildup for increased comfort. Flame-retardant additives decrease shell flammability. Can be used for most welding fumes. For areas with an oil mist, use an R or P respirator.more
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