Product review (3 stars): Chinese origin makes me nervous
Seems to be doing the job so far.  Make sure you flush them as the directions recommend, and for at least the amount it calls for. I used a clear 22oz glass I had on hand to flush this new filter, and the first 3 or 4 glasses of water were pretty dirty and cloudy.  It appeared to be the charcoal dust that needs to be flushed out, but there was a bit of a brownish hue to the first 2 glasses.  A bit concerned that these are made in China where their safety record is spotty at best.  Would much prefer the OEM part that was manufactured in South Korea.  If had noticed that difference I probably would have paid the extra money to avoid the Chinese manufacturing risk.