Product review (2 stars): GW refigerator water filter
The product does not last long (1 yr tops) and costs way more than it is worth.  I took one apart and all it is is fused carbon.  This item should cost no more than $20 and probably costs ~$5 to manufacture.  Howwver, without it, your drinking water access through the door on your refrigerator will slow after a year and a half.