Product review (5 stars): Replacement filter for my French door, 2 drawer Samsung refrigerator
Late last year I bought a fancy Samsung refrigerator - the model RF4289HARS.  It is the one with the 4 doors (actually two French doors on top, a middle drawer, and a bottom freezer drawer.  It has the water and ice dispenser on the left French door just under the snazzy blue led lighted touch control panel.  Anyway, the change filter light came on and so I removed the filter (it is really easy, just unscrew it a half turn and it comes right out) so I could see what the replacement part number on it said.  It was DA-29-00020A.  After looking around the internet, and looking on the Samsung website I found that there is no such part number - the closest thing I found was almost the same number only ending with B instead of A.  I called Samsung and after getting bounced to 3 different customer service people who had no idea whether part DA-29-00020B was the correct replacement for part DA-29-00020A and one customer service person who did not know that the filters are supposed to be changed after a while, I found a person who was able to tell me that DA-29-00020B is in fact the correct replacement filter for refrigerator model RF4289HARS.  I bought two of these filters - one to install now and one for a spare.  I put one in (it takes about 5 seconds to insert it and give it a half twist to the right to install it, and then I followed the instructions of running about a gallon of water through it.  You really do need to run this amount of water through it so get all of the air out of it so you get a smooth stream of filered water coming out.  I then reset the change filter light - you have to do this manually but all it takes is pressing and holding for 5 seconds (not the 3 seconds they tell you) the child lock/filter reset spot on the bottom left corner of the touch control screen just above the water/ice dispenser.  It works great now - tasty filtered water and flavorless crushed ice from my fancy refrigerator any time I want it.