3M™ Paint Sanding Valved Respirator, used for non-harmful dusts from sanding, grinding, sawing and insulating particles, are NIOSH approved and provide at least 95% filter efficiency against solid and liquid particles that do not contain oil. Using 3M™ Cool Flow&trade Exhalation Valve technology, the 3M&trade Paint Sanding Valved Respirator offers heat reduction and easy exhalation making wearing the respirator over longer periods of time more comfortable. The m-nose clip feature allows for fewer pressure points on the face and greater comfort while the advanced filter media makes for easier breathing. Easy to use and comfortable, the 3M™ Paint Sanding Valved Respirator is a great choice in respiratory protection for both the pro and DIYer when working on projects that include sanding, grinding, sawing and insulation. Recommended for sanding and preparation before painting. The patented Cool Flow™ valve allows for easy exhalation and heat reduction for cool, dry comfort. NIOSH approved: N95.