Most N95 masks are for construction to deal with dust and harmful particles from insulation and other materials. These masks are noish approved and not FDA. I

Most N95 masks are for construction to deal with dust and harmful particles from insulation and other materials. These masks are noish approved and not FDA. I am curious what construction workers used in lieu of them. Cloth masks isn’t going to give you the protection of harmful dust from finishing a countertop or doing wood work.