10 3m 8812 FFP1 Valved Dust Respirator - 113200 Against fine respirable dusts, oil and water based mists. • Features the latest 3M filter technology advanced electret to help reduce thickness and breathing resistance to improve wearer comfort. • Unique low resistance exhalation valve which prevents heat and moisture build up. Approved to EN 149:2001 FFP1. Nominal Protection Factor 4. Assigned Protection Factor 4.