Shawmut Shawmut Protex, N95 Particulate Respirator, SR9520 PROTEX™ N95 PARTICULATE RESPIRATOR, SR9520, AMERICAN MADE NIOSH Approved | TC-84A-9295 Made by Shawmut Corporation, a world leader in advanced materials, the Protex™ SR9520 is a NIOSH... Quick view