N95, N99, N100: What's the Difference Between Each Mask?
Dec 20, 2019·N95, N99, and N100 are each safety ratings for masks and respirators. ... making even high-grade respirators potentially ineffective. This is an ongoing problem with no easy solution. ... If you’re tearing down a wall and ripping out old insulation, a simple dust mask or a N95 respirator will be plenty. It’s a short-term project, it doesn ...