Have bought these before. This order has some flaws with the production of the filter. It appears something may have happened during the application or positioning of the filter. The pleats are not evenly patterned and glued tightly together in some parts. To me, this doesnt seem like it would allow proper air flow. I do have images.
I just removed a Honeywell filter and put my new Filter.com filter in. Both have the same dimensions on the label 20x25x4, but the Filter.com is at least 1/2 shy of what is labeled. It LOOSELY fits in the furnace. I pray I have no issues with it