Product review (5 stars): Great value clean water.
This was a great bundle of filters from Amazon.  The price was much  lower than sears and retail stores.  WASH the filters before installing.
DRAIN the air from the lines after installation.  Drain the air by running water through the fridge.  Make sure you have a cup covering the faucet.  Water will shoot out while there is air in the line.

They recommend changing the filter every 3-6 months.  I had a filter  in the unit for over a year without any issues.