Product review (4 stars): Good product, instructions need tweaking
The filter is fine, but it took a call to the manufacturer to make it operate in my refrigerator.  Apparently, an additional twist was required.  The company called me directly and the gentleman even gave me his direct cellphone (it was a weekend) in case I had additional problems (which I didn't), but it would have been much easier if the possible need for that extra step had been noted on the instructions.  Now that I know how to make it work, I will use this again.  It is half the price of the other brand and can be recycled, which the other cannot.