3M 8511 N95 Mask With Valve NIOSH Approved

3M 8511 was Approved by NIOSH in the year 1997. It is a warm welcome due to the 3M unique Cool Flow Valve which releases hot, humid exhaled breath quickly, helping to prevent an unpleasant build-up of heat inside the facepiece a significant cause of discomfort to respirator wearers. Soft inner material provides added comfort while the cup shape design makes the respirator spacious and durable.