Product review (5 stars): It's a water filter
I needed a new fridge water filter and considered that I may have to drive around or call around to more than one store to find this specific item.  Instead, I went to Amazon and found exactly what I needed.  I was a little concerned that it wouldn't be the right model but the specifics were entirely correct in the description.  It was easy to install and I'll definitely come back to Amazon to get a replacement.