Product review (5 stars): Best filter we've had for our fridge
Best water filter we ever used in our Kitchen Aide fridge. Makes a noticeable difference in water flow and quality.

Update a year later. This is still a great filter, however the second one we installed had a charcoal granule come loose and greatly restrict the water flow. Thankfully, the problem was solved by removing the filter and clearing out the loose bit, but it does cause some concern that it would have been a real problem if the granule had lodged further down in the refrigerator plumbing.