NASUM Replaceable Carbon Filters Protective Mouth, Filter Accessories, for 8200, M101, M201, M301, M401, 308 Face Cover¡­

The last two times I purchased these i got a horrible sore throat after using them. The first time I thought maybe there was something wrong with the one set so I bought another set....nope! Horrible sore throat for three days! Feels like my throat is actually burned. My husband tried it and the same thing happened to him. Something is wrong with these! We feel the carbon particles are escaping and that is what you inhale. You can actually see the black dust inside the mask.

the product is made in china by NASUM, it all looks like 3m product but its not. the cotton filters are thinner and little bit bigger then real ones. the cotton box and filter are pretty close but this is a "universal version" to the 3m mask respirator. overall its a good buy for replacement parts for $25

The filter cartridges seem to do the job well but the included particulate pre-filters are junk. Paper thin. Useless even doubled up. I purchased better particulate per-filters to install onto these cartridges before use. Sad I had to go elsewhere. Wished they would have just included proper, thick, useful particulate pre-filters.

Exactly what the description says!

Was looking all over Home Depot for filters that would fit the mask that I bought. These work very well to filter particulate. Much more reasonable to buy refills instead of those that cannot be refilled.

fits perfectly with my mask

Just what I need to replaced my old filters

I ordered the respirator and filters. Was happy to find out that these filters also fit my 3M respirator. Good purchase will purchase again. Will see how long they hold up will have a lot of need in the next couple of months.

this filter is of really good quality I bought the masks then I needed additional filters the duration is very good the wire very easy to install and then offers a quality of pure air whether with the bucane the dust or toxic products you will really have an air purify an incredible quality of filter I recommend this product value for money it is the best I found

I'm glad I got these just for backup so I can continue working on my projects when my filter box goes bad. Great stuff. Works just as well as the OEM stuff that came with the original package.

Nasum is our go-to brand. These are effective filters, value pack.

Bon etat

Not worth the cost, both fell apart the same day. Very poor quality.