{"product_id":"uniflasy-cast-iron-grill-grates-for-weber-spirit-genesis-17-5-x-11-9-in-pair-heavy-duty-searing-heat-retention","title":"Uniflasy Cast-Iron Grill Grates for Weber Spirit \u0026 Genesis, 17.5 x 11.9 in Pair — Heavy-Duty Searing, Heat Retention","description":"\u003cp\u003e\u003cstrong\u003eUniflasy cast-iron replacement grates (17.5 x 11.9 in each) are a heavy-duty, high-heat upgrade designed to fit many Weber Spirit 300\/700 and Genesis 1000–3500 gas grills.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese replacement grates from Uniflasy are engineered to match the footprint and mounting points of numerous Weber Spirit and older Genesis models so you can restore or improve your grill’s searing performance without replacing the entire cooking system. Forged from solid cast iron, they prioritize heat retention and defined sear marks, while sized pairs combine to cover the standard two-burner area found on many 3-burner Spirit and Genesis barbecues.\u003c\/p\u003e\n\n\u003ch3\u003eWhich grill models do these grates fit?\u003c\/h3\u003e\n\u003cp\u003eThey are made to replace original grates on a wide range of Weber Spirit models (300 series, Spirit 700, and Spirit II variants such as E-310\/S-310) and many older Genesis lines including Genesis Gold\/Silver B \u0026amp; C and Genesis 1000–3500 series. They do not fit Genesis Silver A or some newer Genesis II LX variants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Spirit E310\/S310, E315\/S315, E320\/E330, and Spirit 700.\u003c\/li\u003e\n  \u003cli\u003eWork with Spirit II GS4-equipped 300-series grills (E-310\/S-310\/SP-310\/SP-330).\u003c\/li\u003e\n  \u003cli\u003eFit many Genesis Gold \u0026amp; Silver B\/C models (2000s–2010s) and 1000–3500 series.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do cast-iron grates change cooking performance?\u003c\/h3\u003e\n\u003cp\u003eCast iron holds and spreads heat more uniformly than thin steel, producing stronger sear marks and a more consistent grilling surface for steaks, chops and vegetables. That extra thermal mass also helps maintain stable temperatures when you open the lid for turning or basting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuperior heat retention for even cooking and better searing.\u003c\/li\u003e\n  \u003cli\u003eCreates pronounced grill marks that enhance flavor perception.\u003c\/li\u003e\n  \u003cli\u003eRecommended for frequent high-heat grilling and sear-focused cooking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the material and size details I should know?\u003c\/h3\u003e\n\u003cp\u003eEach grate measures 17.5 by 11.9 inches; two pieces pair to cover a typical 3-burner Spirit\/Genesis cooking area of about 17.5 x 23.8 inches. They are cast from solid iron rather than enamel-coated steel, giving them durability and improved thermal performance, though they do require seasonal care to protect against corrosion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIndividual grate: 17.5\" x 11.9\"; full set: 17.5\" x 23.8\".\u003c\/li\u003e\n  \u003cli\u003eSolid cast-iron construction for long-term heat stability.\u003c\/li\u003e\n  \u003cli\u003eNot enamel coated — benefits searing but needs seasoning and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and upkeep?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: the grates drop into the existing support ledges and align with standard Weber mounting positions for compatible models. Regular seasoning and drying after cleaning will keep the cast iron performing well; avoid long exposure to moisture to reduce rust risk.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTool-free drop-in installation for compatible Spirit\/Genesis models.\u003c\/li\u003e\n  \u003cli\u003eSeason before first use and after heavy cleaning for a nonstick surface.\u003c\/li\u003e\n  \u003cli\u003eHand-clean with a brush; dry and lightly oil to protect between uses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this set best for? These Uniflasy cast-iron grates suit home grillers who own compatible Weber Spirit or older Genesis models and want stronger searing, improved heat stability, and a durable cooking surface without replacing the whole grill. Choose these grates if you frequently cook at high temperatures, prefer clearly defined grill marks, or need a direct-fit, heavy-duty replacement for worn or damaged original grates. If you need stainless-steel alternatives or have a newer Genesis II LX model, check model fit carefully before buying.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these grates fit my Weber Spirit E-310?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — these Uniflasy grates are sized for Spirit E-310\/S-310 and other 300-series Spirit models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the grates come pre-seasoned and are they dishwasher safe?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They may arrive unseasoned; hand-season before first use. Do not use a dishwasher—clean by brushing, drying, and oiling.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Uniflasy","offers":[{"title":"Default Title","offer_id":54206306353336,"sku":"B07CZGSKK8","price":146.4,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0636\/7416\/files\/uniflasy-front-packaging-weber-spirit-grates.jpg?v=1790649934","url":"https:\/\/canadianlawn.ca\/products\/uniflasy-cast-iron-grill-grates-for-weber-spirit-genesis-17-5-x-11-9-in-pair-heavy-duty-searing-heat-retention","provider":"Canadian Lawn","version":"1.0","type":"link"}