Product review (4 stars): Water Sentinel WSM-1 Replacement Fridge Filter, 2-Pack
You can't go wrong with the price of the 2 replacement filters. One usually cost about $30 at your neighborhood stores. My only gripe would be that the water still has a taste to it but we have very hard water and we replaced ours in June and 8 months later it's still working. I freeze the water and drink it cold so the taste isn't that big of a deal for me.