![3m 8511 Sanding and Fiberglass N95 Cool Flow Valved Respirator, Niosh-approved, Relief From Dusts and Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles, 5-pack : Amazon.ca: Tools & Home Improvement 3m 8511 Sanding and Fiberglass N95 Cool Flow Valved Respirator, Niosh-approved, Relief From Dusts and Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles, 5-pack : Amazon.ca: Tools & Home Improvement](https://m.media-amazon.com/images/I/512bg8UNDVL._AC_UY1000_.jpg)
3m 8511 Sanding and Fiberglass N95 Cool Flow Valved Respirator, Niosh-approved, Relief From Dusts and Certain Particles During Sanding, Pollen, Mold Spores, Dust Particles, 5-pack : Amazon.ca: Tools & Home Improvement
![Are these masks sufficient against covid? They only had these ones left, I usually use the non-vented 3M masks, they block the most smoke (my method of testing in a high cannabis Are these masks sufficient against covid? They only had these ones left, I usually use the non-vented 3M masks, they block the most smoke (my method of testing in a high cannabis](https://i.redd.it/hh8dq2ofovc91.jpg)
Are these masks sufficient against covid? They only had these ones left, I usually use the non-vented 3M masks, they block the most smoke (my method of testing in a high cannabis
![3M 8212 Particulate Respirators, N95, Flame-retardant shell, Cool Flow valve, adjustable straps, cake- from Cole-Parmer Germany 3M 8212 Particulate Respirators, N95, Flame-retardant shell, Cool Flow valve, adjustable straps, cake- from Cole-Parmer Germany](https://pim-resources.coleparmer.com/item/l/3m-8212-particulate-respirators-n95-flame-retardant-shell-cool-flow-valve-adjustable-straps-cake-4011108.jpg)