N100 classification particulate respirator. Ideal for lead abatement, pharmaceutical manufacturing, welding, metal pouring, and work involving OSHA substance specific particle exposures in concentrations up to 10 times the OSHA PEL, excluding asbestos. It features the 3M Cool Flow exhalation valve, comfortable foam face seal, adjustable straps, and lightweight construction. Respirators are individually packaged in a bag. Must be merchandised on shelf or in bin, cannot be hung on peg hook.