port blocker to fit 3M mask
This part is designed to block off one of the filter ports so you use one filter in a light duty role and not two.
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updated December 20, 2021
Description
PDFNot to be used in heavy dust particulate areas where two filters will be necessary.
Features studs on top for easier attachment and removal than other makes.
Print with text facing up with no support.
Not affiliated with 3M and not an official 3M part. Use at your own risk. Do not use if you are not good at breathing.
Model origin
The author hasn't provided the model origin yet.
