Lightweight - 12.5g. Filters 99% of airborne particulates. Multi-layered filter medium combining electrostatic charge. Ergonomically shaped for comfort and ease of use. Adjustable head straps to provide individual fit. Individually packed complete with instructions for use. Bi Directional filter protects the wearer, the patient, environment, or product. EN149 FFP3 provides a protection factor of 20 x A.P.F. (Assigned Protection Factor) and 50 x N.P.F. (Nominal Protection Factor). APPLICATIONS: Pharmaceutical industry, iron & steel manufacturing, construction, and nuclear industry