Product review (3 stars): Then you can easily install the filter/adapter assembly to the refrigerator filter attachment ...
Was eventually able to install this in my GE refrigerator.  This unit has a rubber washer in the sealing area that is apparently not needed/required in the OEM filter.  Consequently, more axial force is required to compress the washer while tightening the filter to the adapter.  I found that removing the adapter from the refrigerator and installing it on the filter first was easier to do.  Then you can easily install the filter/adapter assembly to the refrigerator filter attachment point.  Appears to work OK.