The 6000 Series is NIOSH approved for negative-pressure air purifying and positive-pressure dual airline applications. 3M 6300 / 07026 Half Face Mask Reusable Respirator Facepiece. This half face respirator is also compatible with the 3M™ TR-600 and TR-800 powered air purifying (PAPR) systems and Dual Airline supplied air systems.
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