Product review (1 stars): Poor quality filters
I purchased several months ago.  After installing the first one several times because it kept knocking and the water flow was very poor, I changed it out for a second one thinking I had a bum filter.  The second one was just as bad as the first.  I will NOT be buying these again, they are crap!  I would like to mention that I have purchased these before, last time in 2015, and never had problems with those.  They have definitely skimped on quality since then.