10 3m 9312 FFP1 Valved Dust/Mist Respirator - 125300 9312 Respirator can be used in many hot and humid environments where applications require FFP1 level dust protection. • Unique 3 panel design offers increased comfort and confidence. • Fitted with a 3M™ Cool Flow™ valve. • Foldable. • Individually wrapped. Approved to EN 149:2001 FFP1. Nominal Protection Factor 4. Assigned Protection Factor 4.