8 RePeteeMe @RePeteeMe_20828 Respiration Mask with Filter and Exhalation Valve (Covid-19) WIP 1 3 745
14 Stephen Smith @StephenSmith Fully Printed One-way Respirator Exhale Valve w/ NATO (40mm) Threading 28 0 137
18 Open Hardware Designs @OpenHardwareDesigns 3M 6200 Respirator Gas/dust mask straps #repair 46 0 109
G 12 GallaghersArt @GallaghersArt Powered, Air-Purifying Respirator (PAPR) Mod for CPAP face masks and more 9 0 41