Those are just very thin foam pads, there's 2 on top of the charcoal and 2 on the bottom. Not rated for anything, they even let some charcoal through if you shake them hard enough.
Mask thread
Jackson Howard
Lincoln Reyes
I think he was talking about the carbon filters
Particulate masks
>droplet protection
>airborne protection
Surgeon masks
>droplet protection
M, P masks
>Petroleum protection (paint, burning trash)
N Masks
>No petroleum protection
>easier to breath
Carbon Masks
>Protection from VOCs, farts
Matthew Cruz
Again, the white layer is a particulate filter or you would be breathing charcoal dust.
Brandon Long
Can do tight hoodie tied tight, then a raincoat over that w/ hood tight tight. Then large surface sealing swim/ski goggles and mask.