GrillGrate For Weber Spirit 300 and older Genesis Models Replacement GrillGrate Set 17.38 in. L X 22GrillGrates are the perfect replacement for the Weber Spirit 300 and other medium sized gas grills. GrillGrates will make your old gas grill better than new. They are interlocking panels that fit across the surface of the grill. They can replace your existing grates or sit on top. GrillGrates produce juicier and more tender food. Made of hard anodized aluminum, they never rust. Every set comes with a GrateTool which is part fork, part spatula that