The 3M™ Combination Dual Airline System, SA2100 is a stethoscope type supplied air system capable of operating as combination negative and positive pressure solution in the event that the air supply is temporarily removed.

-Stethoscope is compatible with all 3M half face and full face respirators with bayonet connections;

-Robust,low profile, innovative design;

-Supplied with CEJN fittings;

-Combination Dual Airline;