Originally Posted by bullwinkle
FIFY-there's really never been any problem with Puro's DESIGN, they were a perfectly serviceable filter in the old pre-Mann & Hummel days-it's the horrible construction & QC that has made them a real risk to use.
I'm wondering if M&H changed the design of the media when they took over and made it more "brittle". If the media was so brittle it wouldn't tear as easily when pleats get a little wide.