Tricky, not happy.
Bought these, little did I know they do NOT include the mounting ring - the only such product on Amazon that doesn't. It's mentioned very briefly on the description.Would it really be so much to add the ring in the pack?Pissed off that I now have to order MORE filters from a BETTER vendor who includes the mounting ring, before I can vaccuum.Learned my lesson, read every line of the description, you might be buying a product that conveniently doesn't include a needed and often replaced part.