Filter pleats are not consistent and appear to be randomly set in the cardboard frame. The pleats are bunched up on the sides and stretched in the middle, not sure how it will impact performance, but the "fit n finish" is poor. Thankful for USA made products and a really great price point. Would be happy to pay a little more to get a product that looked better.
We just received our ne filters and have used them for only a few nights. I can tell from their construction that these are quality products- which we will buy again!