Product review (1 stars): Like the Others, Doesn't Fit
I'm having the same problems as other posters with the fit of these filters.  My old Samsung filter goes right in, these will not.  Sending them back.  Notice that Amazon is selling "open box" versions of these ... gee, I wonder why.  Going to try EFW-DA2903 filters as they seem to get good reviews.  Samsung sure has a lot of problems these days with engineering -- exploding phones, exploding washers -- hey, at least the fridges don't seem to explode.  Come on Samsung, get an engineer that knows what he/she is doing!  If you are really a die-hard and want to use a genuine Samsung filter, you can get a service tech to replace the receiver that the filter screws into, about $200.  Samsung still doesn't "officially" recognize this as a problem but there is plenty of anecdotal evidence (just Google around and you will find plenty of stories).