GE FXHTC Whole Home System Replacement Filter Heavy-duty filtration system Filtered water for your whole home Includes one filter: Compatible with GXWH40L, GXWH30C, GXWH35F, GXWH38F, GNQH38S and most systems with 10" x 4.5" filters NSF Certified: Certified to reduce sediment, sand and rust in your water, appliances and plumbing fixtures Three-month filter life: For best filtration results, filters should be replaced every three months or 30,000 gallons