N95 Mask. NIOSH Certified. Protective Health Gear N95 respirator is a particulate-filtering facepiece that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 classification of air filtration. Our respirator face masks are manufactured in the USA. By manufacturing our respirators in the U.S.A., Protective Health Gear can provide a streamline supply chain to our customers and ensure quality control of the manufacturing process so that you can be confident the mask you are wearing meets all the NIOSH requirements.