Product review (1 stars): After-market blues
Came as a 2 pack.  Tried only one which caused a very loud vibration whenever water water flowed for drinking or for ice. With filter removed the system worked normally.  We have such good water, I wouldn't  use a filter, but my wife has a different mindset.
Purchased through Amazon & sold by Clean Air Supply Nov. 2015 & didn't try using until  March 2016.  Amazon says it can't be returned
I gave it one star because there's no negative choice.  The Samsung filter is pricey, but at least it works properly.