Pro mask 3D, with directional flux and valves
thingiverse
Manuals of use can be found on our FB and IG "Precreafund", the mask has an ergonomic design, it's possible to add polyurethane foam to soften its contacts, it has a system that allows increasing the life of filters and offering greater security by dividing air flows, the filter can be made with Polipropileno+algodon+razo or polipropileno. We have validated results of the filter in the laboratory and ability to disinfect with DAN in hospitals. The mask is large so as not to be a nuisance when talking and has a grip system that makes it comfortable to use, we recommend using the racks created in this community to improve its fit.
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