Weber 7524 Porcelain-Enameled Cast-Iron Cooking Grates (19.5 x 12.9 x 0.5) Porcelain-enameled Set includes (2) grill grates Heavy duty and long lasting Designed for use with Weber Genesis E and S 300-series gas grills Cast iron retains heat superbly, able to produce prominent sear marks Dimensions (each grate): 19-1/2 in. x 13 in.