Yes they are replaceable, I have the same mask and have replaced the filters previously.Are those definitely designed to be replaceable? I don't recall seeing replaceable curved filters before.
I appreciate that it depends on usage but how long do these filters tend to last?As I posted a very long time ago, I have one of these masks and extend the filter life by trapping a couple of layers of toilet paper between it and the retaining grid..
Like everything else, it depend on how much and the type of dust.I appreciate that it depends on usage but how long do these filters tend to last?
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