• 40mm thread filter
• Protects against organic gases and vapours, e.g. solvents with a boiling point above 65C, solid and liquid particles, radioactive and toxic particles and micro-organisms.
• Compatible with the Duraflow and Proflows (2029808 / 2030857)
• Suitable for use with Aviva 40, Sari (5511680), FM1, FM4 and Vision (RKRFF4000
• Conforms to EN143 & EN14387
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