GE GXWH20S Standard Flow Whole Home Filtration System Heavy-duty filtration system: Clear sump allows for easy viewing of filter Filters water at the main supply: Install system in basement and/or out of sight Premium filtration: Certified to reduce sediment, scale, dirt and rust in your water, appliances and plumbing fixtures Easy installation: Includes 3/4" plumbing connection, pressure relief valve, bypass option, mounting bracket and remote filter reminder light for simple installation and filter change Three-month life: For best filtration results, filter (FXWTC, FXUSC, FXWPC or FXWSC) should be replaced every three months