GXWH30C, GXWH35F, GXWH40L GE Compatible Filter Multi-Pack, KleenWater Replacement Filter Cartridges Qty 4, WS03X10039 Replacement O-Ring Oring is compatible with ws03x10039, GXWH30C GXWH35F GXWH40L Part # 151122 Dirt, rust and sediment filtration; Made with NSF approved materials Tri-gradient design provides superior filtration 4.5 x 9.75 inch melt blown polypropelyene water filter cartridges Plastic end caps and gaskets on each end provide water tight seal