Fold Flat FFP3 Face Mask with Valve | EN149 NR Fold flat disposable FFP3 valved respirator offering reliability, effective protection against high levels of fine dust, mist, and other airborne particles. Two head straps that provide a secure fit. Adjustable nose bar enables ability to wear protective eye wear whilst in use. The models are single shift devices. (Denoted by the classification symbol NR) Standards: EN149: 2001 A1: 2009 – Respiratory Protective Devices WR 5003