Provides a minimum of 95% filter efficiency against solid and non-oil based aerosol particulates for excellent worker protection. An added carbon layer helps filter out nuisance levels (less than OSHA PEL) of ozone and organic vapors. It features the 3M™ Cool Flow™ Exhalation Valve which is the patented one-way valve offering easy exhalation for cooler dry comfort. The uniquely designed filter layers contribute to the reduction of particles clogging the filter surface which translates into greater user comfort, longer service life and increased savings to you. The foam faceseal contours easily to help provide a good seal for a comfortable wear. Adjustable noseclip and head a strap provides custom fit and secure seal reducing the potential for eyewear fogging. Work applications include welding, soldering and brazing along with grinding, sanding, bagging and other hot, humid and dusty environments. NIOSH Approved. 10 per box. 8 boxes per case. Sold by the box.