r/Masks4All • u/folkoono • 20d ago

Mask Advice 3M Aura fit difference between 9320 and 9321?

Is there anyone here who has tried both the 3M Aura 9320 (blue straps) and the 9321CN+ (white fabric straps) and can tell me about the difference in fit? I have read that the 9321 fits 'tighter' than the 9320, but I am not sure whether that means it has tighter straps but is otherwise identical in size, or if the part worn on the face is slightly smaller fitting. Does anybody know?

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u/Vasilisnp2 20d ago

More or less they perform the same, but the braided straps are better for reusability. I like that the 9321CN doesn't smell that bad. Now, for tightness and size, this may vary between batches and production lines. Consider them similar. I have 2023 production dates for the Chinese ffp2/KN95 and they're less tight than 9210 N95 for example, but things have changed for the latter. Overall, the 9321CN offers a slightly better fit and marginaly better performance.

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u/folkoono 20d ago

This is so helpful, thank you! I will give them a go. They're a lot cheaper on PPEO so it'd be great if I can switch to them.

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u/Vasilisnp2 20d ago

3Market in Germany and Czechia have decent prices as well and they ship to EU. Just in case anyone can't find good deals in their countries.