Use as a replacement part for 3M Full Facepieces 6700, 6800, 6900 (07138, 07139, 07140 AAD). Replacement head harness assemblies are available for 3M Reusable Respirators and can be fitted by a trained user or a service centre, if the original head harness becomes lost or damaged. 7000002035 - 50051131370055
