3M™ FF-400 Respirator Training: Chapter 1 - Donning 

Hey try twisting a little bit harder. If you look at your filters and your mask they have different sized keys. If you need more help check out chapter two of this series @ 2.25. They guy is tightening the filters to the mask.

Medium size fits most people.

Sound transmission will always be a problem with full face respirators. The FF400 has a speech emitter in the front, tho it’s rather small. Other full face respirators have Voice projection units (VPU) for this reason to amplify voice, tho there’s no VPU for the 3M FF400 unfortunately

3m strongly recommends against it, although some people can apparently get a good seal even with a beard. 3m PAPR would be a safer bet.

pretty much every mask that seals on a face requires clean shaven except for some styles of moustache. Like the other guy said the only thing that allows for facial hair is a PAPR powered hood or SCBA hood style. Some dudes have passed seal checks with facial hair but odds are you won't be paying for a professional seal test, also there is just so many movement variables in the field for a beard or stubble to break seal. For what it's worth, I just shaved my beard for this ff403.

Juliano K.T. Yes. Simple N100 or P100 filters will do

Yeah theyll work listen to ACfilms comment

I got 1 had it for years. For my job now using it for corona too new filters. In our country it cost me $300 nz dollar

@@BoolrVids Thanks, man!

@@kennygeoffrey thank you, i will buy it!

Danm bro thats really cool but show me where i asked

Nobody asked nor should anyone care to ask, that was the point of the joke after all.

@@C1418OS ok

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