Pro Medical Masks KN95 Type Medical Masks K-2 4 layer filtering half-mask KN95 type. Medical Device class 1 type IIR. Ensures high BFE and PFE filtration with low breathing resistance. Medical Product compliant with EN 14683:2019+AC:2019. Verified by Intertek Italy.Declaration of Conformity with EC Directive on medical devices 93/42/EEC. View