GVS Elipse P3 RD Dust Filter, SPR316. Features: P3; provides protection against dust, metal fumes, oil-water vapors, microorganisms, bacteria and viruses, plaster, wood or textile fibers, marble, titanium oxide, soapstone, stone wool, detergents, oil, spices, salt, feed, etc., and dust or particles that may cause lung diseases, such as cotton, graphite, kaolin, zinc and aluminum, coal, asbestos (always check site-specific demolition instructions), bauxite, quartz and iron ore, manganese, lead, and chromium particles; provides at least 99.95% efficiency for particles larger than 0.3 microns.