3M™ 051138-54145 Reusable Full Face Respirator With Cool Flow™ Valve, S, 4-Point Suspension, Bayonet Connection, Resists: Gases, Particulates and Vapors 3M™ 051138-54145 Reusable Full Face Respirator With Cool Flow™ Valve, S, 4-Point Suspension, Bayonet Connection, Resists: Gases, Particulates and Vapors