• 40mm thread filter
• Protects against organic, inorganic , acid gases and vapours as well as ammonia and organic ammonia derivates, mercury and mercury compounds, solid and liquid particles, radioactive and toxic particles and micro-organisms.
• Compatible with the Duraflow and Proflows (2029808 / 2030857)
• Suitable for use with Sari (5511680), FM4 and Vision (RKRFF4000)
• Conforms to EN143 & EN14387