Product review (3 stars): NOT REALLY THE SAME, BY ANY MEANS
Don't be fooled.  This may be a ok filter and will work to replace the WHKF-R-PLUS filter, but it does not filter out what the WHKF-R-PLUS did.  Read and compare what each one filters out of the water.  This one only basically improves taste and filters out sentiment.  The WHFK-R-PLUS filters a list of 12 things.  No comparison in quality!!!  It is a shame that Whirlpool discontinued the WHKF-R-PLUS.  I have been using it for many years, and it had the bonus of being an inexpensive filter, especially considering its outstanding filtering ability.  I will replace the system rather than use this so called comparable one.