BUYER WARNING! You use significantly less filter material (1st photo). The inner ribs that "lock" the filter in place are too thin and about half the width of the original (2nd and 3rd photos). The filter shifts, then it shifts. It doesn't "snap" and falls off completely several times when cleaning, causing the ball to stick each time. I've never had this problem with other brands. I bought a set for my vacuum cleaner (dc41) and for my grandfather (dc65) and this is a problem for both of us. Unfortunately it has become a liability and I will be sending it back.
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