Did you design your mask with inhalation and exhalation
Posted on: April 30, 2020 at 13:48:13 CT
CulturedDan
MU
Posts:
92734
Member For:
14.95 yrs
Level:
User
M.O.B. Votes:
0
valves (you know...the ones they designed for the study)? Congrats on being protected from florescent spray.