7638 Polished Porcelain (Enameled) cast iron grill grates replacement for Weber Spirit E-310/ 320/ 330, SP-320 (2013-2017); Spirit II 310 Series (2017 and Newer) It also fits Spirit 300 series, Spirit 700, Genesis Silver B/C, Genesis Gold B/C, Genesis Platinum B/C (2005 model year), and Genesis 1000-3500 gas grills. Heavy Duty cast iron grates.Retain large amount of heat for a longer period of time, and produce fantanstic grill marks on your food. Polished Porcelain Cast iron grates. Easy to clean. No need to season your grates at your first time. NOT Compatible with Spirit E-310 E-320 (2007-2012) with side mounted control panel. Hongso 17.5" Porcelain Coated Cast Iron Grill Grates Porcelain Coated Cast Iron Grill Grates Replacement Each measuring 17.5" x 11.9", for a total of 17.5" x 23.8" Fits Spirit 300 Series gas grills (with front-mounted control panel) ----Fits Spirit e310, e320 Series , Spirit s310, s320 Series (2013-2017) ----Fits Spirit II 310 Series (2017 and Newer) Grilling Tips and Tricks Keep your grill well-maintained Clean the grill grates with a grill brush before and after use A grill brush and cooking oil are your best defense against food sticking to your grill grates For a good sear, preheat your grill for at least 10-15 minutes. Weather can impact those times. Use a grill thermometer: Beef, Pork, Veal and Lamb: 145 F; Poultry: 165 F; Fish and Shellfish: 145 F Material Type Polished Porcelain Cast Iron