• 40mm thread filter
• Protects against organic, inorganic and acid gases and vapours as well as ammonia and organic ammonia derivatives, solid and liquid hazardous particles, e.g. radioactive and toxic substances 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