Product review (1 stars): DO NOT BUY! DOES NOT FIT KENMORE 9915
Now I am pissed!  Took out the Kenmore to replace it with this one and I pushed it in as on directions as I have done it twenty times before. It was tough to turn the cap and as I pressed to turn, it snapped in.  We didn't feel it was correct so I took it out and tried to set it back in and now, my cartridge holder is broken. I tried to put the Kenmore back in and it won't go in now. Pier has destroyed my filter system and I'm about to go off when they open up tomorrow. I was worried when the filter came in some tacky looking packaging and the filter wasn't even in the box as all others do.  Now, I have no filter system at all. This SUCKS!!!!!!!!!!!!!!  See pics below to see notches are not the same. Yes, I did take the red cap off.