MSA CONSTANT FLOW AIRLINE RESPIRATOR 7-223-1 NEW ADJUSTABILITY ADJUSTABLE END ITEM IDENTIFICATION CONSTANT FLOW AIR-LINE RESPIRATOR ASSY EXHAUST VALVE INCLUDED FILTER REPLACEABILITY REPLACEABLE FILTER TYPE FILTER PAD HEAD HARNESS INCLUDED MASK FILTER QUANTITY 1 MASK MATERIAL SILICONE RUBBER MASK TYPE FULL FACEPIECE MATERIAL TYPE NONELASTIC SPECIAL FEATURES INCLUDES CLEARVUE FACEPIECE,BREATHING TUBE,AND CONTROL VALVE; SOLE SOURCE REQUIRED BY STATUTE 6.302 STRAP TYPE DOUBLE VISUAL PROVISION MATERIAL PLASTIC, POLYCARBONATE VISUAL PROVISION TYPE LENS E-89 #4 012488041