Product review (1 stars): that's $75 wasted, since
Despite the identical packaging/model/number as the previous 2 years of filters I ordered, as well as being the actual OEM Samsung replacement part, none of the filters in this 3 pack would actually fit my refrigerator.  The bayonet mount will not engage far enough to spin the filter to the locked position.  Side-by-side, the new filters appeared physically identical to the old one.

So, that's $75 wasted, since, of course, you can't really use 18 months of filters within the 30 day return window that Amazon offers. But, hey, that's OK - the knock-off filters are much cheaper and apparently just as likely to work as Samsung's own parts...