Product review (4 stars): I am not sure how this product will work but ...
I am not sure how this product will work but I did put it in to see if it fit and it did although I seem to have noticed minor water leaks.  Hopefully that is just from the new filter.  I took the new one out and reinserted the old one as that one was not done yet.  As I said, my big concern was the fit and that seemed to be OK.  The reason for the concern was my part number was the same as above, but with -1  after the 20B.  So hopefully this will work.