Product review (4 stars): Works As Expected.
These fit perfectly... and should, considering it comes from the manufacturer.  Even with the water source left on, water doesn't leak when changing them.  However, if you leave the water source on in the back, it will be more difficult to unlock the old filter and lock the new filter... I had to use pliers because of the back pressure.  You can make this an EZ procedure by turning off the water in the back first.  (My filter was located in the front, between the vegetable/fruit bins.)

I'm giving this filter 4 stars because of the price (I paid $35+)... a little steep.