Originally Posted By: wing0
Just for fun(well not really).
I took a video of the new L14459 that I have and inspected all the pleats through the center hole.
To my eyes, the only part that has more spacing is right under the 2nd "M" stamping. Around the 20 sec mark.
Is that consider excessive?
Pretty good video. Yep, I think you see it, right around 20-25 seconds. Note, it is only in one portion of the filter, and nowhere else. That is likely the seam area. Of course, it is hard to see even in person, and harder to see in the video, but it does appear to have improper voiding. You can clearly see all the other pleats, tightly packed against each other - often 2 folds shown in a single perforation hole. That is basically what the media should ideally be like all the way to the seam. It will be up to you to estimate how deviated yours is. A small deviation may be fine, no way I can say where the exact limit is, except that the examples of failure we've seen are clearly a reasonable limit.
I guess your used filters are gone now... otherwise youd probably be inspecting them.