Product review (4 stars): Worked eventually... water is clear!
I recently installed this GE MSWF water filter, made by Tier 1, on our side by side refrigerator. It does not install quite as easily as the OEM filter, but I did get it in correctly. It also did the often mentioned air lock, or made my fridge shake,shudder, and make horrible  noises. I uninstalled and reinstalled, and eventually, (within 5 minutes) that sound and motion stopped. I let the water run for over 5 minutes, not the most convenient thing to do on a refrigerator! to clear the carbon or whatever is inside, out of the filter to get clean and fresh water. After all that, it finally seems to be working, and the water seems to taste fine. I haven't quite decided if all this is worth saving $20-30 (GE filters are expensive, but work straight out of the package!) My filter did not leak as some have mentioned. I have not noticed the ice from the icemaker being any different from the ice made before the filter swap, so I guess it is perfectly fine. I think this filter, in the end, works satisfactorily, but again, the jury is out as to whether it is worth the installation hassle to save $20 (or more). Since this filter was just installed, I will have to wait awhile and update my review to verify longevity. It states 'up to 6 months'. Well, our GE filter lasted much longer than 6 months, but maybe we don't use the water or ice dispenser as much as most do.
I did receive this filter at a reduced cost for my honest review and opinion. I am not required to leave positive reviews.