Product review (5 stars): Works great for 6 - 9 months.
Great for 6 - 9 months.  In  a GE profile side by side.  My water has quite a bit of chlorine smell to it, and my township adds chlorine/chloramines depending on storm conditions, well/aquifer vs river, etc.  This filter takes out the chlorine for better than 6 - 9 months.  I have occasionally forgotten to change it after resetting the filter reminder LED, and let it go for 9 months, but never noticed a reduction in flow or chlorine.  Ice comes out perfect, no smell, taste, just great.  I don't think my fridge measures water volume, only time, but not sure.  GE recommend 6 months or 300 gallons, but I did not use 300 gallons of water.  (Would need to pull 1.6 gallons a day for 6 months, so no way I hit the 300 gal mark!)

Installation is trivial...align arrow, push up, turn.  Get a permanent marker and write the installation date on it!