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
The 3M™ Combination Dual Airline System, SA-2100 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.