Product review (5 stars): These fit! No notches to cut...they're perfect!
Looked into many filters before finally choosing this one. I have a Samsung RS2556SH refrigerator and was worried this filter wouldn't fit, but it fit perfectly!  No issues whatsoever! It's been installed about 3 weeks now. It is a bit longer than the original, so I did what another review stated and removed the top shelf before installing ( I was still able to fit the shelf at the same height afterward, no adjustment necessary). Installation was easy; although there is no arrow to line up or click to be heard as with the original, all you do is tighten until it no longer turns.  I was worried about the black particles a few reviews stated, so I flushed 4 pitchers full of water before drinking it myself. Even in the first pitcher full I never encountered any such particles. Water tastes great, no leaks or strange sounds coming from my fridge and the price is amazing, can't beat it. I will definitely be purchasing these again, but a four pack next time! :)