AOSafety Threaded to 3M Bayonet Adapter
Description
Adapter to use 3M filters with AOSafety Threaded Respirator Built on https://www.thingiverse.com/thing:4245358 40MM NATO (RD40x1/7) to 3M™ Filter Adapter by AgapeIngenium Tight fit. Sanding will be needed at the zipper. In theory, this design will let you choose the orientation of the 3M filter relative to the respirator. In practice, mine was too tight for that adjustment
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