3 ms·
Even a box fan and 2 Merv-13 furnace filters glued to it in a V-shape will perform FAR better than 99% of non-HEPA consumer purifiers out there, for a fraction
by antisthenes 7y ago
Even a box fan and 2 Merv-13 furnace filters glued to it in a V-shape will perform FAR better than 99% of non-HEPA consumer purifiers out there, for a fraction of the price.