I ordered 6 of these last year and one arrived dented near the base crimp so I wouldn't use it, so I sacrificed it for science, the conclusion is this ~8-9 year old Ultra would have been a great filter if it didn't get dented. I scratched off the date code trying to hack saw it, but the copyright date on the sticker was 2014 and 2013 on the box, so it's probably 8ish years old . The pleat spacing near the crimp is a bit wide but for the old wire backed media that's really no problem.
