Weber 7524 Porcelain-Enameled Cast-Iron Cooking Grates (19.5 x 12.9 x 0.5), pack of 2Porcelain 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. Porcelain enameled cast iron cooking grates fits Genesis 300 series grills. Not compatible with Genesis II or Genesis II LX 300 series grills. Set of 2. Cooking Grates Built for Genesis 300 series