Product review (1 stars): These filters are falsely advertised
The description on Amazon: The Activated Carbon Block Filter inside has NSF42/53 approval. The quality of the filter is the same or better than the OEM branded filter.
Water filters sold by Kenmore and Whirlpool typically meet the two standards listed by OnePurify.  NSF Standard 42 means it filters chlorine taste and odor, and NSF Standard 53 means it filters the long list of contaminants listed in OnePurifys description (including lead, mercury, etc.).
However, the performance data sheet enclosed with the filter lists the only contaminant that the filter will remove is Chlorine Taste and Odor, and, there is no technical description on the filter itself.  In response to my inquiry to OnePurify, they confirmed that they have misrepresented the product on Amazon's website, stating they only meet NSF Standard 42 as stated on the Performance Data Sheet.  And the Contaminant Reduction is Chlorine Taste and Odor.
Thus, these filters are not as advertised and are far inferior.  I had missed the few earlier Amazon reviews that reported this dishonest description.  If you are only interested in removing chlorine and odor, these are probably fine.  But I personally would not buy from a dishonest seller.  Separately, I had no problem with fit or installation.