Review on 3M Particulate 2091 Respiratory Protection by Patrick Matin

Bought for years of work. I use them when inspecting a home with severe mold or after fires. They are great for protection from the most harmful dusts or fine particles such as lead paint dust, sanding dust, mold spores etc. but you need to have a suitable mask and change cartridges before they start to slow down the odor and the particles bypass them.