So far, so good. Picked a pair of MERV13 for the AC/Furnace. Will watch them periodically to see who they are measuring up. Hoping it is a good replacement and one which continues to work going forward.
We'd had 2 of these filters installed over the last year or so, and they work very well. The old ones are filled evenly with dust, etc. The air particulate count goes way down after new one goes in.
Filter was too small for my furnace (way less than the advertised 20x25x4 dimensions. Now I have a furnace with questionable filtering (until my new filters arrivefrom a different source).