4 ms·
From what I've seen the indoor climate geeks do recommend prioritizing throughput over filter rating, so they'd rather use a box fan with MERV 13 filters rather
by vintermann 3y ago
From what I've seen the indoor climate geeks do recommend prioritizing throughput over filter rating, so they'd rather use a box fan with MERV 13 filters rather than HEPA (which is ~ MERV 17 I think?).