AQUACREST Replacement FQSLF Under Sink Water Filter, Compatible with GE FQSLF (2 Set) Tested and certified by NSF International against NSF 42. Enjoy fresh water by replacing your water filter every 6 months or 1,200 gallons, whichever comes first will vary based on water condition. The advanced coconut carbon block can remove chlorine, bad taste, unpleasant odor in your tap water. Wonderful design to fit the original brand. Easy for installation and operation, no tools required. Will fit GE FQSLF, GXSV65R, GXSL55, GQSL55R, GXSL55F, GQSL55F. AquaCrest is an independent brand. It is not the original. Advanced coconut carbon block for enhanced water purity. Easy setup wizard. Optimum results for up to 1,200 gallons or 6 months.