Quarantine Coloring Book
Not For Sale
The Pulmosan General Respirator RA-110 was a simple half-mask with chin exhale valve and a grille that screwed off to replace the filter pads. Made by Pulmosan Safety Equipment Corp.
Similar masks in my collection: Pulmosan Respirator R-17, CESCO Respirator 90-F, MSA GasFoe Respirator, MSA ClearVue DustFoe Respirator