Product review (1 stars): This must be a knock off cartridge - water tastes horrible!
This cartridge weighs half the amount as the original one that came with my LG refrigerator.  Everything else looks identical from the label, to the dimensions and packaging.

The water dispersed from the filter came out dark black for the first couple gallons.  Afterwards it became clear.  Not sure if this is normal or note.  However, there is a distinct difference in the quality and taste of the water with this particular cartridge.  It does not taste good at all and tastes very chlorinated or simply not filtered.

My guess is that this is a knock off or fake LG filter.