The 3M 4251 combines gas and particle filtration in a single, ready-assembled half mask. It is designed for selected organic vapours with a boiling point above 65°C, together with suitable dusts and non-volatile mists. The bonded filters sit close to the face to support a clear field of view, and the central exhalation valve helps release heat and moisture.
Key features and specifications
- Model: 3M 4251 from the 4000 Series.
- Classification: FFA1P2 R D to EN 405:2001+A1:2009.
- Integrated A1 organic vapour and P2 particulate filters are included.
- Soft, textured face seal with an adjustable head cradle and neck straps.
- Low-profile, balanced construction.
- Filters are fixed: the complete mask is replaced at the end of its usable life.
Select against the actual chemical and exposure level, and arrange a face fit test before occupational use. Follow the product instructions for cleaning, storage and replacement. The R designation permits reuse within those limits; maintenance-free does not mean unlimited use.
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