Product review (5 stars): Actually is a MSWF replacement
I just received my filter today and installed it today.  It is a perfect fit for the GE MSWF filter and at a fraction of the price!  Some of the other filters advertised as a MSWF replacement are not which is probably why there are bad reviews about product not fitting.  If you are looking to replace a filter, be sure to check for a manufacturers website for a cross reference sheet before ordering.  Water Sentinel does have this list. This item is also made in the USA!  Will be reordering soon since I found this lower price alternative.