Pricing mentioned is for a PK. Requires a minimum buy of 1 PK. For Model = 5400 Series Respirator ; Height = 5 in ; Length = 4 in ; Resistance = Airborne Particulates ; Chemical ; Contamination ; Gas ; Vapors ; Smoke ; Type = Gasket ; Usage = Chemical ; Manufacturing ; Municipal Services ; Steel and Metals ; Width = 1/2 in ;