I have a Shark IonFlex X40 that I really like. It started to lose suction and I realized I hadn't cleaned the filters in a long time (oops!). Then I cleaned them, but they dried up completely in a couple of days. Of course I had to use the vacuum cleaner several times during those 2 days, so I figured there must be a better way. I found these filters at such a great price and ordered them straight away. They arrived quickly and when it came time to clean the filter again I just put them inβ¦