Product review (1 stars): Be wary of failure rate of these filters...
Second time I purchased these... the first ones were fine... on this group, when I installed the second filter the water barely flows through it.  Have reinstalled it 4 different times now with no improvement.  Will probably have to chalk it up as a loss as it takes way too long for a single glass of water.

Can't return it after 6 months and one filter used, but I don't like throwing away $15 so before purchasing, assume that there is some sort of failure rate.  Hopefully my third one won't have the same issue or I may try to find a way to post less than one star.