GE Part Number HHRING Repl"O"Ring for Household Filtration Sys For Whole Home Filtration Systems Includes one ring and tube of food-grade silicone Replacement for high flow whole home systems 2"W x 10"D x 6"H ring size Compatible with GXWH30C, GXWH35F, GNSH38S, and GXWH40L