Crossed 0.5 mm filters for easy disinfection
You need 02 of each filter
You can find the original here:https://www.thingiverse.com/thing:4236324
<<... DISCLAIMER >>>
This model has not been approved by any regulatory body. Use at your own risk, and only as a last resort, if you have no other approved protection. Recommended measures to protect against COVID-19 coronavirus infection are as follows:
Stay home and avoid contact with others
Avoid touching your face with your hands
Wash your hands very often
<< WARNING >>>
This model has not been approved by any regulatory agency. Use it at your own risk, and only as a last resort, if no other approved protection is available. Recommended measures to protect against COVID-19 coronavirus infection are as follows: