I don't think they offer replacements for that, but what you can do is get a sheet of #300 stainless steel cloth, the same stuff used for Genesis wicks and a circular punch that matches the diameter of the splash back guard, and also a small circular punch to create the center hole. A hammer and a block of wood are all that are needed other than the mesh and the circular punches. A 1' x 1' sheet will last you years.