These masks are intended to be used for protection against solids, such as those from minerals, coal, iron ore, flour and certain other substances. They are extremely durable with a soft and comfortable inner surface, also have an adjustable nose piece and secured head straps to provide proper fit. These masks have a 510(K) number for the medical market and can be used TB situations as recommended by OSHA. The size is slightly smaller than respirators in N95 series.
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