AQUACREST Replacement GXRLQR Inline Water Filter, Compatible with GE SmartWater Twist and Lock in-Line GXRLQR Water Filter (Pack of 3) Tested and Certified by NSF 42 by NSF International. Advanced coconut carbon block can reduce chlorine, bad taste and odor in water. Enjoy fresh water by replacing your water filter every 6 months or 300 gallons, whichever comes first will vary based on water condition. Wonderful design to fit the original brand. Easy for installation and operation, no tools required. REPLACEMENT MODEL: Compatible with filtration systems GXRLQ and GX1S50, GE SmartWater GXRLQ filter system, Kenmore: 46-9914, AP3418061, WR17X11608, FQK1K, EFF-6023A, Aqua Fresh WF278. AquaCrest is an independent brand. It is not the original.