7 Best Grates For Gas Grill | Cast Iron Vs Porcelain: Real Specs

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Leship’s 19.5-inch grates are engineered specifically for the Weber Genesis 300 series (2007–2016), including the E310, E320, S310, S320, and the later E330 and S330 models. Each grate measures a precise 19.5 inches wide by 12.9 inches deep, and the set weighs over 16 pounds—one of the heaviest in this comparison, which translates directly into superior thermal mass. The porcelain-enameled cast iron absorbs flame heat rapidly and holds it steady enough to sear a cold strip steak without the temperature dropping below medium-rare territory. Customers consistently report that these grates fit the Genesis frame without any rocking or front-to-back gap, a common complaint with thinner aftermarket alternatives.

The surface finish is a glossy, polished porcelain that releases food cleanly and resists rust far better than bare cast iron. Because the porcelain layer is thick enough to handle repeated high-heat cycles, the grates maintain their non-stick character even after multiple grilling sessions. The extra width of 19.5 inches is a critical spec for Genesis owners—many replacement grates sold as “universal” measure 18.75 inches and leave a cold dead zone on each side. Leship avoids that trap entirely by mirroring the OEM footprint. Note that these do not fit Genesis II or Genesis II LX models from 2017 onward, which use a narrower 18.75-inch frame and different support rails.

Reviewers mention that the weight feels reassuringly solid and that the grates produce deep, dark sear bars on burgers and chicken thighs. The set ships as two individual grates, each with a slightly curved underside that channels grease toward the drip tray. For anyone restoring an older Genesis 300, these grates provide a factory-grade cooking surface without the premium OEM price tag. The only minor downside is that the porcelain coating may chip if a metal spatula is dragged aggressively across the bars, but that applies to virtually any enameled cast-iron grate on the market.

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The Uniflasy 7638 grates straddle two major Weber families: the Spirit 300 series (E310, S310, E320, E330) and the Genesis 1000–3500, Gold B/C, Silver B/C (2002 and later), plus the Spirit II GS4 lineup and even the SmokeFire EX4/EX6 pellet grills. Each grate is 17.5 inches wide by 11.9 inches deep, and the set tips the scales at just over 14 pounds. The cast-iron body is finished with a matte porcelain enamel that delivers the non-stick release of a coated grate without the glossy brittleness of a high-gloss finish. This matte coating is less prone to crazing under thermal shock, making it a smart choice for grillers who frequently cook at maximum flame output.

One of the most valuable details in the listing is the explicit exclusion of the 2025 Edition Spirit E-310, which uses a redesigned flame-tamer system that is incompatible with these grates. For all pre-2025 models, the fit is precise: the side tabs drop into the support slots with no wobble, and the front-to-back depth sits flush against the firebox walls. The bars are thick enough to create pronounced sear marks without bending, even when pressing down on a spatula. The Uniflasy brand has built a reputation for dimensional accuracy, and this set upholds that standard—customers note that it lines up perfectly with the burner tubes, eliminating uneven heating.

Several buyers report that these grates have outlasted the original Weber enameled-steel grates by multiple seasons, largely because the cast iron does not burn through at the thin ends the way stamped steel does. The matte finish does require occasional oiling after cleaning to maintain its non-stick character—not as fussy as bare cast iron but not as maintenance-free as glossy porcelain. If you own a Spirit II or a pre-2025 Genesis and want a direct replacement that improves heat retention over the factory part, this set is the most versatile mid-range option reviewed here.

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The Uniflasy 7637 is purpose-built for the Weber Spirit 200 series—the two-burner E210, E220, S210, and S220 models from 2013 to 2017, plus the Spirit II E210 and E220 from the same era. Each grate measures 17.5 inches long by 10.2 inches wide, and the full set weighs 12.56 pounds. The key dimensional differentiator here is the 10.2-inch depth: Spirit 200 grills have a narrower firebox than the 300 series, and a grate that is too deep will overhang the burners and create cold shadows. Uniflasy nails the fit, and the matte porcelain enamel matches the look and feel of the 7638 set reviewed above, just in a smaller package.

Because the 200 series typically runs two burners, heat distribution is more sensitive to grate quality. These cast-iron bars absorb and radiate heat evenly across the entire cooking surface, eliminating the hot spot that forms above the burner junction on thinner steel grates. The porcelain coating is applied thickly enough to prevent rust from forming at the bar intersections, which is where moisture collects after cleaning. The listing specifies that these do not fit Spirit models with side-mounted control panels—an important warning for anyone with a 2012 or earlier Spirit that uses a different frame geometry.

Buyers who upgraded from the original Weber steel grates report a night-and-day difference in sear quality and heat retention. The cast iron stays hot enough to seat a batch of burgers sequentially without the second batch steaming instead of searing. The grates are dishwasher-safe only in the sense that they can survive a cycle, but hand washing with a stiff nylon brush and a light oil rub is the recommended method to preserve the coating. For Spirit 200 owners who want the same performance as the premium 7638 set without paying for extra width they cannot use, this is the smart buy.

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The Hongso 16 15/16-inch grates serve one of the widest compatibility lists in this roundup, covering Charbroil Advantage 3- and 4-burner models, Commercial series, Performance series, Classic 3-burner, Designer 3-burner, Gourmet T-36D, Red Infrared 3-burner, Gas2coal, plus Kenmore, Thermos, Broil King, Master Chef, and Kirkland variants. Each of the three grates measures 16 15/16 inches long by 8-5/16 inches wide. The set covers a total cooking area of roughly 17 by 25 inches when arranged side by side. The porcelain-enameled cast iron has a glossy non-stick finish that releases chicken skin and fish fillets without tearing.

The key strength of this set is not just model count but dimensional tolerance. Many Charbroil grills use a three-grate system where the center grate sits narrower than the outer two, but Hongso manufactures all three to the same width, relying on the firebox frame to hold them in alignment. This works well on grills with a straight-sided firebox but can cause the grates to shift laterally on models with tapered frames. Buyers should verify that their firebox interior width at the grate support tabs is at least 25 inches to avoid overhang.

The porcelain coating is thicker than typical budget three-packs, and the cast iron core is dense enough to prevent the bowed look that thinner grates develop after a few high-heat cooks. Customers highlight that the grates produce consistent browning across all three sections, with no dead zone in the center. The biggest drawback is the weight—nearly 11 pounds for the set—which makes handling and storage slightly cumbersome. For anyone reviving a mid-sized Charbroil or Kenmore grill, these grates deliver reliable heat retention without the premium upcharge of a brand-specific set.

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The Direct Store DC114 is a three-grate set designed primarily for Chargriller models—2121, 2123, 2222, 2828, 3001, 3030, 3725, 4000, 5050, 5252, 5650, and 9020—as well as the King Griller 3008 and 5252. Each individual grate is 19.75 inches long by 6.75 inches wide, and the three together span a total width of approximately 20.25 inches. The porcelain coating is polished to a glass-like sheen that resists adhesion and cleans up with a damp paper towel when the grate is still warm. The Direct Store brand includes a clear note in the listing acknowledging that cast iron is fragile during shipping and offers a replacement policy for breakage, which is a meaningful warranty detail for a heavy, brittle product shipped in a single box.

The polished porcelain finish is thicker than the matte coatings found on budget grates, and it does not craze or bubble at normal grilling temperatures up to 500 degrees Fahrenheit. The company recommends against dishwasher cleaning and steel brushes to avoid stripping the porcelain, reinforcing that this is a coated grate rather than a raw cast-iron piece. The width of 6.75 inches per grate means the gaps between bars are tight enough to support small vegetables like asparagus tips without them falling through to the flame, a practical advantage for grillers who cook mixed protein-and-vegetable meals.

Customers who own Chargriller Duo and standard 5050 models report that the grates sit flat without rocking and that the porcelain surface does not show rust after several months of regular use, even when the grill is stored outdoors with a cover. The primary limitation is that the set is too narrow for larger Chargriller models that use four grates—those owners should look at the Hongso 4-pack below. For three-grate Chargriller and King Griller grills, this set offers a clean, polished cooking surface at a mid-range price point.

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The Direct Store DC104 is a two-grate set aimed at Nexgrill 4- and 5-burner models (720-0830H, 720-0783E, 720-0888N, and others), Expert Grill 4-burner propane grills, Charbroil 4-burner models (463241113, 463449914), Kenmore 720-0670A, Uniflame, Member’s Mark, and Uberhaus grills. Each grate measures 17 inches long by 13.25 inches deep, and the total cooking surface spans 17 by 26.5 inches when both are placed side by side. The cast-iron core is coated with a polished porcelain finish that provides basic non-stick performance and rust resistance. At the budget end of the spectrum, this set prioritizes compatibility over heavy-duty construction.

The porcelain coating is thinner than what you will find on the Leship or Uniflasy grates, which means it may wear faster if the grates are regularly scraped with a metal brush. Direct Store addresses this in the product description with a specific cleaning recommendation: soak in soapy water and use a soft brush or sponge. The grates are also notably lighter than the premium options, with the entire two-grate set weighing under 12 pounds. This makes them easier to lift and store but reduces thermal mass, meaning they will cool down faster when a large batch of cold meat hits the surface. For small family cooks—four burgers or six chicken thighs—the heat retention is adequate; for full-grill catering sessions, the temperature drop will be more noticeable.

Reviewers appreciate the wide compatibility list and the fact that the grates arrive well-packaged to minimize shipping breakage. The primary complaint is that the coating on the outer edges can chip if the grate is dropped or banged against the firebox during installation. Given the entry-level price point, these grates make sense for someone who needs an immediate replacement for a warped or rusted set and does not want to invest heavily in a premium aftermarket part. They are a functional stopgap or a good first upgrade for a grill that is not used daily.

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The Hongso PCE051 is the largest set in this comparison, supplying four individual grates that each measure 19.75 inches long by 6.75 inches wide, for a total cooking surface of approximately 19.75 by 27 inches. The target grill family is the Chargriller lineup—2121, 2123, 2222, 2828, 3001, 3008, 3030, 3725, 4000, 4208, 5050, 5072, 5252, 5650, and 9020—plus the King Griller 3008 and 5252. The set weighs 17.46 pounds, making it the heaviest entry here, which directly translates into the highest thermal mass for batch cooking. Four grates also mean narrower individual pieces, which reduces the stress on the cast iron during heat expansion and lowers the chance of warping over time.

The porcelain coating on the PCE051 has a glossy finish that resists sticking and cleans easily when the grates are warm. Because each bar is only 6.75 inches wide, the gaps between grates are minimized, creating a nearly continuous cooking plane that works well for delicate items like thin fish fillets or sliced vegetables. The four-grate layout is particularly useful on larger Chargriller models where the burner arrangement is wider than the standard three-grate footprint—owners of the Chargriller Duo 5050 gas side will find that these grates cover the entire burner zone without an exposed gap at the ends.

Customers who have used these on Chargriller 5050 and 4000 models note that the fit is snug without being tight, and the grates sit securely on the support tabs without sliding during use. The downsides are the sheer weight—removing all four for cleaning requires a bit of effort—and the fact that the porcelain coating on the outer edges can wear thin over a long season. For heavy-use grillers who cook for large gatherings and want a uniform sear surface without cold spots, the PCE051 delivers coverage and heat retention that two-grate sets cannot match.