The 3M™ Adflo 837012 Particle Filter is designed to replace worn or damaged particle filters in the 3M™ Adflo™ Powered Air Respirator. The 3M™ Adflo 837012 Particle Filter replacement particle filter is simple to install and must always be used. The 3M™ Adflo 837012 Particle Filter should be replaced when the particle filter indicator becomes red, the battery operating time becomes too short or when a "fully loaded" filter triggers a low airflow alarm. 10 Free Pre Filters included
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