Product review (1 stars): I did a lot of research on line and found out it would only fit if the smaller tooth (there are 2 of them) was removed which I did to another unit that I bought locally and I am happy to say that it worked fine
I had to return the item to Amazon because it wouldn't  fit into my refrigerator. I found out at a later date that there is a manufacturing defect  created by Samsung which they refuse to acknowledge. I did a lot of research on line and found out it would only fit if the smaller tooth (there are 2 of them)  was removed which I did to another unit that I bought locally  and I am happy to say that it worked fine. I pray that Samsung wakes up and fixes their problem before I have to change the filter again