8511PA1-2 RESPIRATOR, SANDING | 3M paint sanding valved respirator is used for non-harmful dusts from sanding, grinding, sawing and insulating particles. Using 3M Cool Flow exhalation valve technology, the 3M paint sanding valved respirator offers heat reduction and easy exhalation. Easy-to-use and comfortable, the 3M paint sanding valved respirator is a great choice in respiratory protection for both the pro and DIYer.