Dust Masks – What do the Letters and Numbers Mean?

Not to long ago, our team went through the EPA Lead-Safe Renovator training program, so we make sure we keep ourselves and your family safe when working in situations where there may be lead paint.  One of the questions that came up as part of this was what do the letters and numbers you see on dust masks actually mean?  The National Institute of Occupational Safety and Health (NIOSH) is who came up with these ratings, and they actually mean something.  We thought we would share some of that wisdom.

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