Product review (1 stars): !!! Damaged the filter holder in fridge !!!
We have bought 2 of these before and they worked perfectly. We just go to our previously placed order and reorder each time. The unit that arrived this time kept falling down from the filter holder every 3 hours. I compared the old filter and new one to they had the same serial number. But, a closer inspection revealed that the grooves to fix the filter were very different on the new one. This was causing it to fall down repeatedly. Attached picture shows new one on left and old one on right.
Now the bigger issue is, I had already tried to turn this filter in place more tightly each time, and in that process damaged the grooves on the filter holder in the fridge. So, even the old filter falls down now.
I have to replace the whole filter attachment to make this work.