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Similar-fit model pairings of 3M filtering facepiece respirators

This 3M technical bulletin can help you plan for both immediate respirator acquisition/use and for future respirator needs, stockpiling and contingency planning.

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Employers considering incorporating additional respirator models into their respiratory protection program may want to identify models that are similar in construction to the ones familiar to their employees. When respirators and fit testing supplies are constrained or not available, it may be preferred to use a respirator with similar construction and fit characteristics than providing a "non similar" model.