RedMed mask to 3M filter adapter
thingiverse
ResMed AirFit F20 to 3M 5N11 N95 filter adapter. Just wanted to see if I could make this work with my spare mask. Much more comfortable than the 3M mask and should provide the same if not better fit and filtration. Printed in 3 parts to make it much easier to print. Simply super glue the round adapter to the top adapter.
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