CPAP adapter for 3D printed mask

Here is a simple adapter to transform this great design into a CPAP mask.
It does work like a charm with my CPAP machine : https://www.thingiverse.com/thing:4303543

All credits go to these designers :
https://www.youtube.com/redirect?event=video_description&v=77PgC3kMrFs&redir_token=yM1QSX3HjR1Z1r79ZsxhX6MtvNt8MTU4NzQ5MTk5NEAxNTg3NDA1NTk0&q=https%3A%2F%2Fgrabcad.com%2Flibrary%2Fbreathing-mask-with-screw-in-filters-version-2-1


and for this nice intake fitting :
https://www.thingiverse.com/thing:4256244