Product review (5 stars): Easy to install.
I received the three pack water filter promptly.  They were packaged well and came with thorough instructions on installation and what to expect after a new filter is inserted.  There can be sputtering from air bubbles in the line.  When I ran water through the first time I was glad I had this warning because it would have concerned me that something was seriously wrong when mine did that exact thing.  The filters also come with a sheet of month reminder stickers to stick on your filter casing if you do not have a newer refrigerator that has a digital reminder (like me).  The filter is super easy to install.  This seller had the best Prime price.  I will be ordering again.