mask
https://ebay.us/BsNvOz 20 filters https://www.amazon.ca/gp/offer-listing/B0861BTBWK/ 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.
there are thread adapters between the old russian models and new 3m standard. that could be this patent
another mask design: https://melaniekham.com/homemade-face-mask/
why i'm interested in masks all of a sudden: https://idlewords.com/2020/04/let_s_all_wear_a_mask.htm
another sewing pattern https://www.joann.com/on/demandware.static/-/Library-Sites-LibraryJoAnnShared/default/dw4148ae36/static/landingpage/assets/MaskInstructions_V2.pdf
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