posted 5 years ago
Thats what I'm worried about.
I do want the silver layer in front of the carbon layer rather than behind and closer to the mouth.
Looks is no matter of concern. I want it to work.
Because buying decent filters is no longer an option.
Our local city just took all the 9n5 masks and up to save them for emergency personnel. Filters are becoming alarmingly expensive daily.
Like, up 20 dollars for n99 in 1 week kind of expensive.