Salter Labs Percent O2 Lock Venturi Mask, Adult Complete, 7'Tubing, 50/CS

Salter Labs Percent O2 Lock Venturi Mask, Adult Complete, 7' tubing , 50/CS

Salters Percent-O2-Lock Venturi masks offer an adjustable, variable venturi system delivering accurate O2 concentrations (24%, 26%, 28%, 31%, 35%, 40%, 50%) from a single unit.  Concentration levels are easily dialed and locked into place.  Threaded connectors eliminate the needs for christmas trees.