What say ye? They are actually rated at MERV 13 which is pretty good. Apparently that will trap sub-micron particulate like a HEPA filter would down to 0.3micron but lacking 99.99+% first pass efficiency of a MERV 16-20 true HEPA. I may be able to acquire two of these filters for free.
Would you fab up a filter holder and install it to a small air recirculator??
Would you fab up a filter holder and install it to a small air recirculator??