• Patented 3M cool valve - easy breathing while reducing heat & moisture build up. • Utilises all existing 3M 2000, 5000 & 6000 series filters & cartridges. • Soft silicone material ensures wearer comfort. • Extremely pliable face seal to improve fit. Approved to EN 140. Nominal Protection Factor with P3 Dust Filter 50. Assigned Protection Factor with P3 Dust Filter 20. Assigned Protection Factor with P2 Dust Filter 10. Assigned Protection Factor with Gas or Combination Filters 10 or 1000 ppm whichever is the lower for Class 1 or 10 x WEL (Workplace Exposure Limits) or 5000 ppm whichever is the lower for Class 2.