Product review (1 stars): GE won't stand behind this product! (Update: But Amazon did!)
I ordered two of these GE MWF filters in May.  The first one was fine.  When it was time to replace it, I took the seal off the second one and found loose carbon material right under the seal.  I installed it anyway, but the water from the refrigerator tasted awful.  I called the 800 number on the filter, but GE won't do anything and tole me to contact Amazon.  I contacted Amazon, and since the order is six months old, they won't replace it but told me to contact the manufacturer. I called the GE phone number that Amazon provided (only the last digit is different than the number on the filter), and was told to contact Amazon.  The GE supervisor talked over me and released "Amazon" at least 10 times.

I am not happy.

Update 1/1/18:  I am very pleased to report that even though they didn't have to, Amazon replaced the filter!  They also wanted the old one shipped back so they could return it to the manufacturer.  Thank you Amazon!