PM 2.5 Filters

Get additional filters for your masks.

PM 2.5 5-Layer Carbon Activated ...

Replacement Filters In terms of size, the 2.5 refers to the size of the poll...

Replacement Filters In terms of size, the 2.5 refers to the size of the pollutant being blocked. Think of the average hair being .1 millimeter, generally the smallest thing visible with the naked eye, the same width as a human hair. In order to s...

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