NIOSH approved as an N95 Particulate Respirator. Valve makes exhalation easier. Recommended for: sanding wood/plastic/metal, cutting concrete/bricks, installing fiberglass, sanding drywall.Respirator Type :Disposable . NIOSH Approved :Yes . Filter Rating :N95 . Exhalation Valve :Yes . Adjustable Strap :No . Filter Included :N/A . Masks Included :10 qty .