Product review (5 stars): GE SmartWater MWF Refrigerator Water Filter
This is the in-line, inside refrigerator water filter. From GE website, the price was more than double. The Amazon price was not quite half what I could get from the hardware store or Lowes. The filter works great. Water & ice taste good (no taste). And the filter seems to last longer than the recommended 6 months.  Same product and quality, just much cheaper!