Product review (4 stars): Decent replacement  for the stock filter
My first filter only lasted about a month do to the very hard water where I live. The original one crusted up with mineral deposits and would not wick up the water. I did not add vinegar as recommended, I do now!
This replacement filter seems to work almost as well as the original for a good price. I do think the original filter did work some better, this one doesn't seem to wick up the water quite as fast so the humidifier runs a little longer between cycles. But, for me, the better price was worth the trade off.
 I would buy it again.