Product review (1 stars): FLOODED MY KITCHEN and soaked my wood floors!  DO NOT BUY!!
I see a lot of people saying these do not fit their fridge and I finally figured out why.  After trying and trying to install this filter, it just wouldn't sit in there properly and make the quarter turn that it needs to lock in place.  It seemed to be identical in shape to the old one, but it just wouldn't go in.  After repeated attempts I took it out and examined the old and new filter carefully side by side.  I noticed that the plastic the "U" shaped lip that is intended to keep it in was getting smushed from my repeated attempts to install.  Then I noticed that my old original filter had a much thinner "U" than the new filter.

Out of sheer curiosity, I grabbed my Dremel and shaved down the edge of the "U" shaped part just where it was catching and voila!  It fit perfectly!  So this means the manufacturer of this product just isn't reproducing the original design quite right.

I ran water through it and it seemed fine, but as I was sitting in my living room I heard something awful .  Water gushing!!!  I ran into the kitchen to see the bottom of the fridge spraying water all over the floor.  I quickly shut off the water valve, but man did I have a mess to cleanup.  IT FLOODED MY KITCHEN AND DINING ROOM.  Soaked my wood floors and made me soooo MAD!!!!

When I took out the the filter to examine what had happened, I saw that the rubber gasket that is designed to be tight and keep the water in the fridge and NOT all over my floor had come half way off.  Just to confirm this was the problem I reseated it back on there and screwed in the filter again and it didn't leak.

Look people, I fell victim to the save a few bucks and buy the cheap knock-off but you don't have to make the same mistake I did.

1.  It didn't fit until I modified their design (which you shouldn't have to do)
2.  The loose gasket came off and flooded my house
3.  DON'T WASTE YOUR TIME AND JEOPARDIZE YOUR HOUSE!

Ok, rant over.