Product review (1 stars): Hate it when this happens!
I would leave less than one star if I could.  I used the filter (as directed by the manufacturer).  It has lasted about 3 months and is now filtering the water so slowly that It's nearly impossible to use.  I called the phone number for Samsung.  They are claiming that it's Amazons fault that THEIR filter has malfunctioned.  I spent the full price for the 'genuine' Samsung filter.  Wasted my money. It's so frustrating!!!  I will try and return, but doubt that will work!!