- 40mm thread filter
- Protects against organic, inorganic, gases and vapours, solid and liquid particles, radioactive and toxic particles and micro-organisms.
- Compatible with 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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