Choosing the best gas grill inserts built for outdoor use starts with knowing what kind of product you need. Some options are true built-in grill heads for an outdoor kitchen, while others are tabletop grills or flat-top plates that sit on an existing grill. The picks below cover all three styles, so compare the installation type, usable cooking area, fuel needs, and fit before you buy.
Table of Contents
Quick Comparison
| Product | Type | Cooking Area / Output | Best For |
|---|---|---|---|
| Nexgrill Tabletop 2 Burner Grill & Griddle Combo | Portable tabletop grill and griddle | 263 sq. in.; 13,500 BTUs | Portable, flexible cooking |
| Uniflasy 25 x 16-Inch Grill Griddle | Griddle plate for an existing grill | 400 sq. in. | Flat-top cooking on a large gas grill |
| Brand-Man 40-Inch 6-Burner Built-In Grill Head | Built-in grill head | 860 sq. in.; 60,000 BTUs | Large outdoor kitchens and gatherings |
| XLB-TYNFD 4-Burner Gas and Charcoal Grill | Built-in gas and charcoal grill | About 417–420 sq. in. listed | People who want gas and charcoal options |
| BODEGA 5-Burner Built-In Grill Head | Built-in propane grill head | 988.5 sq. in.; 58,000 BTUs | High-capacity outdoor cooking |
Our Picks: Best Gas Grill Inserts Built For Outdoor Use reviews
1. Nexgrill Tabletop Grill and Griddle Combo: Best Portable Option
The Nexgrill is not a built-in insert. It is a portable tabletop grill that offers a useful alternative if you want outdoor cooking without building a kitchen island. Its removable grates and included griddle let you switch between traditional grilling and flat-top cooking.
The 263-square-inch cooking area and two burners suit smaller meals and casual gatherings. A cast aluminum lid, built-in temperature gauge, and 13,500 BTU output add useful control, while the removable grease tray makes cleanup more straightforward. Handles and a compact design also make it easier to move and store than a fixed grill head.
Its main trade-off is capacity: it is better for a few people than for large groups. It uses liquid propane and is designed for small propane tanks, so check the fuel setup you plan to use. Compared with the built-in models here, it requires no outdoor-kitchen cutout, but it also does not provide the same cooking space or permanent installation.
Pros:
- Switches between grill grates and a flat-top griddle
- Portable design with handles for moving and storage
- Built-in temperature gauge and removable grease tray
- Two burners provide 13,500 BTUs of stated output
Cons:
- Smaller cooking area than the built-in grill heads
- Not designed to install into an outdoor kitchen
Verdict: Choose the Nexgrill if you want a compact, propane-powered grill with both grate and griddle cooking, rather than a permanent outdoor-kitchen insert.
2. Uniflasy Grill Griddle Plate: Best for Adding Flat-Top Cooking
This product is a griddle plate for an existing gas grill, not a standalone grill or built-in head. Its 25-by-16-inch cooking surface provides 400 square inches for foods that can be awkward on open grates, such as eggs, vegetables, bacon, and fried rice. Raised sides help keep food on the surface, and the grease channel directs drippings toward its collection area.
Fit is the key buying question. The cooking surface measures 25 by 16 inches, but the handles extend the total outside length to about 27.1 inches. The listing recommends a five-burner or larger grill and says you need at least 27.1 by 16 inches of clear usable space at grate level. Measure your grill rather than relying on its advertised width.
The listing describes the plate as cast iron and says it has a nonstick coating. Since exact material can matter for weight, care, and heat behavior, check the product details before ordering if you have a firm material preference. The care instructions call for hand washing, thorough drying, and covered storage. This insert adds flat-top versatility at a lower commitment than replacing your grill, but it will not provide the same fit or stability as a dedicated griddle appliance.
Pros:
- Provides 400 square inches of flat cooking space
- Raised edges help contain food while cooking
- Grease channel helps direct oil and drippings
- Useful for foods that could fall through standard grill grates
Cons:
- Requires careful measurement, including space for the handles
- Needs hand washing, thorough drying, and covered storage
Verdict: Pick the Uniflasy if your grill has enough clear grate-level space and you want a large flat-top surface without buying another complete grill.
3. Brand-Man 40-Inch Built-In Grill Head: Best for a Large Outdoor Kitchen
The Brand-Man is a true built-in grill head for an outdoor kitchen. It has six burners rated at 10,000 BTUs each, for 60,000 BTUs total, and a listed 860 square inches of cooking space. The primary cooking area includes cast iron grates and a heavy-duty cast iron griddle plate, giving you options for grilling and flat-top cooking in one unit.
Its stainless steel construction, double-walled hood, warming rack, and slide-out front grease tray are practical features for a permanent outdoor setup. The six burners allow separate heat zones, which can help when you are cooking different foods at once. The grill is configured for liquid propane and described as convertible to natural gas with a conversion kit sold separately.
Installation dimensions deserve close attention. The listing gives overall dimensions of 39.7 to 45.4 inches wide, 20.8 inches deep, and 18.6 inches high, along with cutout dimensions of 40.5 to 42.8 inches wide, 16.7 inches deep, and 11.5 inches high. Because the stated width ranges are unusual, confirm the required cutout and clearances with the seller or installation documentation before building around this grill.
Pros:
- Large listed cooking area with six burners and multi-zone control
- Includes cast iron grates, a griddle plate, and warming rack
- Stainless steel body and double-walled hood
- Removable front grease tray supports easier cleanup
Cons:
- Requires a correctly sized outdoor-kitchen cutout
- Natural gas conversion kit is sold separately
Verdict: The Brand-Man is a strong candidate for a spacious outdoor kitchen if its cutout dimensions suit your design and you want both grate and griddle cooking.
4. XLB-TYNFD Gas and Charcoal Grill: Best for Dual-Fuel Flexibility
This built-in grill is designed to offer both gas and charcoal cooking. It comes configured for liquid propane, includes a natural gas conversion kit, and lists two charcoal trays for charcoal use. That flexibility may appeal if you like the convenience of gas but also want the option to cook over charcoal.
The listing describes a 417-square-inch cooking surface in one section and 420 square inches elsewhere, so treat the usable area as approximately 417 to 420 square inches. It also contains a burner-count conflict: the title says four burners, while the description refers to five 12,100-BTU burners. Confirm the configuration and total output with the seller before purchase, especially if burner count is important to your layout or cooking plans.
The stainless steel frame and grates, removable grease trays, and built-in thermometer are intended for outdoor use and routine cleanup. However, the supplied dimensions are 17.7 by 20.5 by 27.7 inches, which are not enough by themselves to confirm a safe built-in cutout. Get the required installation dimensions and clearances before constructing an island around it.
Pros:
- Offers gas and charcoal cooking options
- Includes a natural gas conversion kit and charcoal trays
- Stainless steel frame and grates
- Removable grease trays and built-in thermometer
Cons:
- Listing conflicts on burner count and cooking-area measurement
- Confirm built-in cutout requirements before installation
Verdict: Consider this model if dual-fuel cooking is your priority, but verify the burner details, cooking area, and installation requirements before committing.
5. BODEGA 5-Burner Built-In Grill Head: Best for High-Capacity Cooking
The BODEGA is a built-in propane grill head with four main burners and a rear infrared burner. The listed total output is 58,000 BTUs: 48,000 from the four main burners and 10,000 from the rear burner. It also includes a rotisserie kit, built-in thermometer, electronic ignition, and a detachable stainless steel grease tray.
Its listed total cooking area is 988.5 square inches, making it one of the largest options here. The rotisserie and rear burner add another way to prepare larger cuts of meat, while the main burners are intended for everyday grilling. The grill includes a propane regulator and hose and can be converted to natural gas with a separate conversion kit.
Check the dimensions carefully before planning an island. Although the product title calls it a 30-inch grill, the supplied overall dimensions are 42.34 inches wide, 26.46 inches deep, and 20.24 inches high. Confirm the actual cutout size and required clearances with the manufacturer or seller, rather than using the title alone. The stated 988.5-square-inch total cooking area is also not the same as the primary grate area, so check how the cooking space is divided if you need a particular amount of direct grilling room.
Pros:
- Four main burners plus a rear infrared burner
- Includes rotisserie equipment and electronic ignition
- Large stated total cooking area
- Detachable stainless steel grease tray
Cons:
- Natural gas conversion kit is sold separately
- Title width and supplied overall dimensions differ, so verify fit
Verdict: The BODEGA is worth considering for a large outdoor kitchen where rotisserie cooking and high stated capacity matter, provided its true installation dimensions fit your island.
How to Choose a Gas Grill Insert for Outdoor Use
Decide Whether You Need an Insert or an Add-On
A built-in grill head is made to fit into an outdoor-kitchen island, so it needs a compatible cutout and the clearances required by its installation instructions. A griddle plate, such as the Uniflasy, sits on top of an existing grill. A tabletop model, such as the Nexgrill, is portable and does not serve as a permanent island insert. Choose the product type that matches your setup before comparing features.
Measure the Cutout or Grill Surface
For a built-in model, compare the manufacturer’s cutout dimensions—not only the overall product width—with your planned opening. Confirm depth, height, ventilation, and clearance requirements as well. For a grill-top griddle, measure the clear space at grate level and include handles or other parts that extend beyond the cooking plate. Do not assume that a product labeled “30-inch” will fit a 30-inch opening.
Check Fuel Type and Conversion Needs
Confirm whether the unit is configured for liquid propane or natural gas. Some models include conversion hardware, while others require a separate kit. A gas conversion may involve specific parts and installation steps, so use the instructions for the exact model and have a qualified professional handle gas connections when needed. Portable grills may use smaller propane tanks, so check the product’s stated compatibility.
Match Cooking Space to Your Meals
Cooking-area numbers can refer to the main surface, warming rack, or total space combined. Look for the primary cooking area if you want to know how much room is available for direct grilling. Larger surfaces help when cooking for a group, but they also require more room in your outdoor kitchen. If you mostly cook for a few people, a compact grill or a griddle insert may be more practical.
Consider Burner Layout and Cooking Flexibility
Multiple burners can let you create separate heat zones, which is useful when searing one food and cooking another more gently. A griddle plate or included griddle adds flat-top cooking without requiring a separate appliance. If you are considering a gas-and-charcoal model, verify how the fuel systems work and confirm the listed burner configuration, particularly when the product information differs across sections.
Look at Materials and Cleanup
Outdoor equipment needs regular care, and materials affect both durability and maintenance. Stainless steel is featured on several built-in options, while the griddle plate listing describes a nonstick-coated cast iron surface. Check the care instructions for the specific product. Grease trays, removable parts, and accessible collection channels can make cleanup easier, but they still need to be emptied and cleaned as directed.
Verify Product Details Before Building Around a Grill
Some product listings provide conflicting figures for dimensions, cooking area, or burner count. When a grill will be installed in a permanent island, those details are critical. Confirm the cutout measurements, included components, fuel configuration, and required clearances with the seller or manufacturer before buying materials or starting installation.
Frequently Asked Questions
What is the difference between a built-in grill head and a grill insert?
A built-in grill head is a complete grill unit designed to fit into an outdoor-kitchen island. The word “insert” can also refer to an accessory, such as a griddle plate, that sits on an existing grill. Check the product description and installation requirements to see which type you are considering.
Can I use the Uniflasy griddle on any gas grill?
Not necessarily. The plate’s cooking surface is 25 by 16 inches, and its handles extend its outside length to about 27.1 inches. The listing recommends a five-burner or larger grill and calls for at least 27.1 by 16 inches of clear usable space at grate level. Measure your grill before ordering.
Which option is best if I do not have an outdoor kitchen?
The Nexgrill tabletop model is the portable choice in this group. It does not need a built-in island cutout and offers both grill grates and a removable griddle. The Uniflasy plate is another option if you already own a gas grill with enough space to support it.
Can these built-in grills use natural gas?
The Brand-Man and XLB-TYNFD listings describe natural gas conversion options, while the BODEGA listing says a conversion kit is sold separately. Check whether the kit is included and follow the model-specific installation instructions before connecting a grill to a natural gas supply.
Why should I confirm the cutout dimensions separately from the grill width?
The outside dimensions describe the unit itself, while cutout dimensions describe the opening needed to install it. A grill may also need clearance and ventilation beyond the opening. Use the manufacturer’s required cutout measurements and installation instructions rather than estimating from the product title.
Which option has the largest listed cooking area?
The BODEGA lists 988.5 square inches of total cooking space, and the Brand-Man lists 860 square inches. These figures may include more than the main cooking grate, so check how the manufacturer divides the cooking area before comparing usable primary space.
Final Recommendation
For a permanent outdoor kitchen, the Brand-Man is a compelling choice if you want six burners, a large listed cooking area, and both grates and a griddle plate. The BODEGA offers a large stated total cooking area and rotisserie features, but its width needs careful verification. For a flexible add-on, the Uniflasy provides a broad flat-top surface if your existing grill can accommodate it. Choose the Nexgrill if portability matters more than a built-in installation, and consider the XLB-TYNFD only after confirming its conflicting burner and measurement details.
