Product review (4 stars): Works and we use longer than suggested.
I have used this filter for a few years now,  replacing not quite as frequently as suggested.  But it's worked well and according to promise.  I wanted to buy my fridge filter at a local home improvement store,  but they were almost twice as much.  The sales guy gave me something about their filters meet a higher standard.  And that may be true but the water tastes just fine with this filter and from my at home water test,  it's equally safe (of course we have municipal water so we use a filter for taste more than safety). Of you don't replace every 6 months as suggested the filter slows down the flow.  But thus far going a couple months over hasn't led to filter bits I  the water.