Product review (5 stars): Fits Samsung RSG257AARS
I have a Samsung refrigerator about 3-4 years old.  the model number is RSG257AARS.  The filter that Samsung makes no longer fits and I am not going to use an exacto knife to cut off little pieces to make it fit.  Samsung customer service is awful; they insist that the filter fits even though it does not.  I did try another filter recommended by someone which is no longer available on Amazon...so it was start at the beginning all over again.  Turned out that this filter is better than the other one I got that fit.  It was a cinch to put in...turned in easily...I only had to run a few quarts through it before it was clear...tastes just fine...the company ships it promptly and then send follow up emails to make sure you are satisfied or to see if you have questions.  I noticed when I put in the last filter that my refrigerator made some odd noisy clanking sounds...dont really know how to describe it...since I have installed the filter from Waterfall, it is is quiet.  I am very satisfied and will order more.