Product review (1 stars): Does not fit...
I was sent two FMS-1 water filters (same label and name as what I have previously purchased); however the 2 locking plastic extensions at the top of the filters are a few millimeters longer than other HDX FMS-1 filters previously purchased. As such, it does not fit my refrigerator. I have a model RS2577SL Samsung refrigerator. In hindsight, I should've heeded other reviews for other products by the same manufacturer. I'm not the only one having trouble with this... Choose a different manufacturer.