Ive used filter but for a few years without issue. Unfortunately these filters were not the same thickness as similar 4 box filters. Result was loose fitting.
The pleats in the filter were uneven and in a couple of spots they were pressed together. This concerns me because it could create an uneven airflow though the filter and even restricting it in these spots. The two filters I bought from you last year were not like this. I expected better quality than this for my money.