TotalBoat N95 Disposable Dust Mask 20-Pack Soft, adjustable noseclip to provide comfortable and secure fit to seal out dust and particulates. N95 dust masks filter 95% of airborne particles. Ideal for working in dusty environments. Perfect when working with wood, fiberglass, drywall, painted surfaces and other non-toxic dust. Heat welded dual elastic straps create tight seal around face. Economical and functional alternative to 3M 3810 dust masks and other N95 respirators. 20 dust masks per box.