Product review (1 stars): Buyer beware
I had a feeling they were too good to be true.  The Samsung replacement filter costs about $49.  These were 3 for $37.  I should have known better.  I guess they were working as a filter.  It's hard to tell.  But they definitely stopped my ice maker working.  Samsung warns that the use of any filter other than Samsung will void the warranty.  I can see why they say that.  It's a pity that they charge so much for their filters.  One is tempted to buy the cheap filters.  That did not work out for us.  We have the 32 cubic ft 4 door refrigerator.  Once we saw that the ice maker was not working I immediately went to a local hardware store and bought the Samsung replacement.  Within hours we had ice again.  I reluctantly recommend the Samsung replacement because of the price, but ultimately it is much better than having no ice or a broken ice maker.