3M Powered & Supplied Air Breathing Tubes are part of a NIOSH-approved respiratory system 3M Powered & Supplied Air Breathing Tubes connects the air source with the headtop and ensures clean air reaches the headtop reliably and with unrestricted airflow. 3M Powered & Supplied Air Breathing Tubes are compatible with with certain 3M(TM) Respiratory Headtops and Air Delivery Units. 7100167214 - 00051131277564
