GP-5 russian gas mask 20 filters 80$ for one!

3xn95 respirators, two used

DIY mask from Hong Kong, similar to the n95 (~n70) if setup with a nanoparticle filter

home depot is all out of stocks except for those which offer... minimal protection.

langevin has cartridges

there are thread adapters between the old russian models and new 3m standard. that could be this patent

another mask design:

why i'm interested in masks all of a sudden:

another sewing pattern

Created . Edited .