3M Disposable Respirator: Dual, Adj, Metal Nose Clip, Comfort, White, M Mask Size, 3M, N100, Molded

These general purpose disposable N100 respirators have an exhalation valve. They are used where there is high risk of exposure to airborne particles, including woodworking, demolition, and food manufacturing. N100 respirators filter at least 99.7% of airborne particles. They are not oil-resistant. The exhalation valve opens automatically when the wearer breaths out to allow breath to exit the mask quickly, keeping the wearer cooler and more comfortable. The valve automatically closes when the wearer inhales to ensure all air breathed in is filtered.