Product review (5 stars): great product
We have a refrigerator with a water/ice dispenser, but without a filter.  Therefore we purchased this along with the line kit to supply filtered water to the fridge.  I choose the Culligan product because of the cost, good reviews, and how long it will last.  After 2 months we are very happy with the product. The cartridges are easy to put in, and the water taste great.  We had previously used Brita pitchers, and this is much better: fliter is only about $2 more, lasts for 1 year vs. 3 months for Brita, and doesn't take up space in the fridge.  Wish we would have installed this years ago.