Product review (5 stars): Great replacement filter
This is pretty much the same cartridge that came with my GE Monogram fridge.  So, the part number matches and all.  I get about a year of performance with these, with pretty heavy use (3-4 people cranking water out of it all day long) before the little "change filter" light tells me to replace it.  I drink bottled water all day at the office, and I can't tell the difference between the stuff that my RO system + this GE unit puts out.  It tastes great.  In the 7 years that I have used these, I have not had a bad cartridge yet.