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by jldugger 1465 days ago
What does the H in H12 stand for then?
2 comments

It's actually E12 vs H13 - there is no H12. The "E" in "E12" stands for "EPA", as opposed to "HEPA".
aww jeez
According to the table it is not H12 but E12 which corresponds to Efficient Particulate Air filters (EPA), I.e. not high-efficiency.