Product review (5 stars): Although the manual says that I need the more expensive RPWFE filters, this one did work, and for about a quarter of the cost.
Much cheaper than the RPWFE filters.  I have been buying the RPWFE, which are much more expensive, because the manual and online information indicate that my refrigerator requires them.  I bought this much less expensive  RPWF version to see if it would work, and it does!.  The difference between the RPWFE and the RPWF is that the RPWFE has an RFID chip taped to it.  If your refrigerator does not look for the RFID chip, then you do not need the more expensive filters.  For the price of the less expensive filters, it is worth a try.  I have also read that you can carefully remove the RFID chip from the old filter and tape it to the same location on the less expensive filter to get it work.  Although I have not (needed to) tried it, having some background in electronics, this seems like it would work.