GE GXRLQR Twist and Lock In-Line Refrigerator/Icemaker Replacement Filter GE guaranteed fit: Compatible with filtration systems GXRLQ and GX1S50. Compatible with refrigerators without built-in filtration: Easily attaches directly to existing refrigerator/icemaker water line in select GE side-by-side and top-freezer refrigerators. Premium filtration: Certified to reduce asbestos, chlorine-resistant cysts, lead and 5 other contaminants. Six-month filter life: Filter should be replaced every six months for best filtration results. Note: Packaging may vary