3M(TM) sanding and fiberglass valved respirator is used for non-harmful dusts from sanding, grinding, sawing and insulating particles. Featuring 3M(TM) Cool Flow(TM) valve technology, the 3M(TM) sanding and fiberglass valved respirator offers heat reduction and easy exhalation. Easy-to-use and comfortable, the 3M(TM) sanding and fiberglass valved respirator is a great choice in respiratory protection for both the professional and the DIYer.