The Imperial S Island Experience — Complete Cabinetry, Strong Burners, One Clean Cookbox.
Five Dual-Tube burners, 875 sq. in. of total cooking space, a rear rotisserie burner with kit included, a 10,000 BTU side burner, and 304 stainless steel cabinetry — the single-oven Imperial S island for buyers who want the full package without the dual-oven footprint.
The Broil King Imperial S 590iE is the right answer for homeowners who want a premium outdoor kitchen island and don't need two independent cooking environments to get it. Five stainless steel Dual-Tube burners deliver 55,000 BTUs across 625 sq. in. of primary cooking surface, with the included stainless steel warming rack bringing total capacity to 875 sq. in. Professional cast stainless steel cooking grids and the 304 stainless steel Flav-R-Wave system give you the sear and the flavor a serious outdoor kitchen deserves. The 15,000 BTU rear rotisserie burner and premium kit are in the box — no additional purchase needed. A 10,000 BTU range side burner handles sauces, reductions, and anything that needs a separate flame. Linear-Flow valves with 180° precision control and Sure-Lite ignition make heat management confident and consistent. Built-in oven lights and illuminated knobs keep the setup functional after dark. And the five-burner 304 stainless steel cabinet with four storage drawers, a side burner cabinet with tank storage, and a one-door/one-drawer storage cabinet make it a complete outdoor kitchen — not a grill looking for a home.
Four Things That Make the Imperial S 590iE More Than a Built-In Grill
The specs that separate a complete outdoor kitchen island from a grill head sitting in a box.
Swipe to see all features
55,000
BTU Main Burners
Five stainless steel Dual-Tube burners spread high-output heat evenly across 625 sq. in. of primary cooking surface — strong, consistent performance with no dead zones.
875 sq. in.
Total Cooking Space
625 sq. in. primary surface plus the included stainless steel warming rack brings total capacity to 875 sq. in. — enough room to cook the main and keep everything else ready at the same time.
25,000
BTU Side + Rear Burners
A 15,000 BTU rear rotisserie burner with premium kit already included, plus a 10,000 BTU range side burner — full rotisserie and stovetop capability with nothing extra to buy.
304 SS
Full Island Cabinetry
Five-burner 304 stainless steel cabinet with four storage drawers, a side burner cabinet with tank storage, and a one-door/one-drawer storage cabinet — the complete island, ready to anchor your outdoor kitchen.
What's Included in the Box
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Broil King Imperial S 590iE Grill Island
- Five stainless steel Dual-Tube main burners (55,000 BTU)
- Professional cast stainless steel cooking grids
- 304 stainless steel Flav-R-Wave cooking system
- Stainless steel warming rack
- 15,000 BTU stainless steel rear rotisserie burner
- Premium rotisserie kit
- 10,000 BTU range side burner
- Linear-Flow valves with 180° precision control
- Sure-Lite electronic ignition
- Premium thermometer
- Built-in cookbox lights and illuminated control knobs
- Roll-action lid with cast aluminum end caps
- Stainless steel handles
- Slide-out grease tray system
- 304 stainless steel cookbox with cast aluminum end caps
- Five-burner 304 stainless steel cabinet with four storage drawers
- Side burner cabinet with tank storage
- One-door / one-drawer storage cabinet
Granite countertop, stainless steel sink, and faucet are sold separately and are not included with this island.
Deep Dive — Imperial S 590iE Features
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Strong everyday grilling performance for patios and entertaining spaces
The Imperial S 590iE is built for buyers who want real cooking power without overcomplicating the setup. With five stainless steel Dual-Tube burners, a generous primary cooking area, and premium cast stainless steel grids, it has the performance to handle both quick weeknight meals and more ambitious weekend entertaining. If you want one outdoor kitchen centerpiece that feels capable, durable, and easy to use, this layout makes a real difference.
Premium cooking components with side burner and rotisserie flexibility
This grill island does more than cover the basics. The rear rotisserie burner and included premium rotisserie kit expand what you can cook beyond standard grilling, while the range side burner helps with sauces, sides, and finishing work outdoors. Combined with the stainless steel Flav-R-Wave cooking system and precision heat control, the S 590iE is built for buyers who want a more substantial grilling experience.
Built-in storage, polished styling, and nighttime cooking convenience
The S 590iE is more than a grill set into a cabinet. It is a full grill island setup with 304 stainless steel utility drawers, dedicated storage, a side burner cabinet, and details that make evening cooking easier, including built-in oven lights and illuminated control knobs. It gives outdoor kitchens a more finished, furniture-like feel than a bare built-in grill head alone, while still keeping performance front and center. For shoppers comparing premium backyard cooking setups from leading manufacturers, browsing our outdoor living brands page can help you see where Broil King fits.
Broil King Imperial S 590iE Features & Benefits
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Five stainless steel Dual-Tube burners: Delivers strong, even main burner performance across a generous grilling surface.
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Range side burner and rear rotisserie burner: Expands what you can cook outdoors, from sauces and sides to rotisserie meals.
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Professional cast stainless steel cooking grids: Offers a more substantial grilling surface with premium feel and durability.
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304 stainless steel island cabinetry: Adds durable storage and a cleaner, built-in outdoor kitchen presentation.
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Built-in lights and illuminated knobs: Makes nighttime grilling more comfortable and easier to manage.
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Premium powder-coat cabinet finish: Adds a polished look that suits refined outdoor kitchen spaces.
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Slide-out grease tray system: Helps simplify cleanup after everyday cooking and larger gatherings.
Who It's For — The Deck & Den Take
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The S 590iE is the entry point into Broil King's Imperial S island line — and it's a strong one. If you want the quality of the Imperial S series (professional cast stainless grids, 304 SS cabinetry, full rotisserie and side burner setup included) but your cooking doesn't require two independent ovens running simultaneously, this is the model that makes the most sense. You get the same build standard, the same cabinet configuration, and the same included accessories as the 690iE — the difference is one cookbox at 625 sq. in. instead of two cookboxes totaling 750 sq. in.
For most households, that's more than enough. 875 sq. in. total with the warming rack covers a serious family dinner or a gathering of ten without crowding. The Flav-R-Wave system and cast stainless grids mean the food quality coming off this island is the same as what comes off the larger models. You're not trading down on cooking performance — you're trading down on simultaneous temperature flexibility, which most buyers don't need every cook.
Who should step up: if you regularly cook two proteins at significantly different temperatures at the same time, the S 690iE dual-oven model is worth the upgrade. If you want connected temperature control and cooking presets, look at the QS 590iJ. If your patio space or budget is tight even for this model, the Regal S 520i island is the next tier down.
Same note as the other E-configuration islands: sink and faucet are sold separately — budget for those if you're planning a complete outdoor kitchen with a wash station.
- Homeowners who want the full Imperial S island experience — premium grids, complete cabinetry, rotisserie and side burner included — in a single-oven format
- Buyers who cook for family groups or regular gatherings and want 875 sq. in. of total cooking capacity without dual-oven complexity
- Experienced grillers who prefer manual temperature management without connected control or preset modes
- Outdoor kitchen planners who want a complete, furnished island arriving as a single unit — not a component build
- Buyers planning to add a sink (sold separately) — this configuration includes the cabinet opening
- Natural gas or propane setups — both fuel versions available
Full Specifications & Dimensions
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Broil King Imperial S 590iE Specifications
| Brand |
Broil King |
| Model |
Imperial S 590iE |
| Product Type |
Outdoor kitchen grill island |
| Fuel Options |
Natural gas or liquid propane |
| Main Burner Output |
55,000 BTU |
| Burners |
Five stainless steel Dual-Tube burners |
| Side Burner |
10,000 BTU range side burner |
| Rear Burner |
15,000 BTU stainless steel rear rotisserie burner |
| Primary Cooking Surface |
625 sq. in. |
| Total Cooking Space |
875 sq. in. including stainless steel warming rack |
| Cooking Grids |
Professional cast stainless steel cooking grids |
| Cooking System |
304 stainless steel Flav-R-Wave cooking system |
| Cookbox |
304 stainless steel cookbox with cast aluminum end caps |
| Thermometer |
Premium thermometer |
| Heat Control |
Linear-Flow valves with 180° precision control |
| Ignition |
Sure-Lite electronic ignition |
| Lid Design |
Roll-action lid with cast aluminum end caps |
| Handles |
Stylish and durable stainless steel handles |
| Finish |
Premium powder-coat paint finish on cabinet and base |
| Cabinet Construction |
Five-burner 304 stainless steel cabinet with four storage drawers |
| Storage |
Side burner cabinet with tank storage and one-door / one-drawer storage cabinet |
| Lighting |
Built-in lights located in the cookbox and control knobs |
| Grease Management |
Slide-out grease tray system |
| Included Accessories |
Premium rotisserie kit, stainless steel warming rack |
| Assembled Dimensions |
49.12" H × 94.98" W × 30.9" D |
| Weight |
651 lbs. for both LP and NG configurations |
| Sold Separately |
Granite countertop, stainless steel sink, and faucet |
Still deciding? Explore our outdoor kitchen buying guides for ideas on planning the right grill island for your space.
Warranty, Shipping & Returns
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Manufacturer Warranty
- Covered by Broil King's limited manufacturer warranty: limited lifetime coverage on stainless steel/porcelain steel lid components and the stainless steel cookbox; 15 years on cast stainless/stainless steel cooking grids, Dual-Tube burners, side burner, rear burner, stainless steel Flav-R-Wave, stainless steel components, and remaining parts and paint. Labor, service-call, shipping, removal, and reinstallation costs are excluded warranty, honored directly by the manufacturer.
- Warranty applies only to products operated in the country where purchased.
Deck & Den Store Policies
Manuals & Documents
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The linked Broil King owner’s manual covers the Imperial gas grill series, and assembly manual 70084-E75 includes the Imperial S 590iE island configuration.
Frequently Asked Questions
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What is the total BTU output of the Imperial S 590iE?►
Main burner output is 55,000 BTU across five stainless steel Dual-Tube burners. The rear rotisserie burner adds 15,000 BTU and the range side burner adds 10,000 BTU, for a combined system total of 80,000 BTU when all burners are in use.
What is the cooking area on the Imperial S 590iE?►
The Imperial S 590iE offers 625 sq. in. of primary cooking surface. With the included stainless steel warming rack, total cooking space is 875 sq. in.
Does the Imperial S 590iE have two independent ovens?►
No. The Imperial S 590iE has a single cookbox at 625 sq. in. The dual independent oven layout is a feature of the 690i models (both S and QS series). If you need two separate temperature environments running simultaneously, the Imperial S 690iE is the equivalent model with that capability.
Does the Imperial S 590iE have iQue smart control?►
No. The Imperial S 590iE is the standard S series model without iQue connected temperature control, preset cooking modes, or included electronic meat probes. Temperature management is handled manually using the Linear-Flow valves with 180° precision control and the premium thermometer built into the lid. If you want iQue smart control with Smoke, Roast, and Grill preset modes and two included meat probes, the Imperial QS 590iJ is the equivalent model with those features.
Is a rotisserie kit included with the Imperial S 590iE?►
Yes. The Imperial S 590iE includes both a 15,000 BTU rear rotisserie burner and a premium rotisserie kit in the box — no additional accessory purchase required for rotisserie cooking.
What is sold separately on the Imperial S 590iE?►
The granite countertop, stainless steel sink, and faucet are all sold separately and are not included with this island. Budget for these if you are planning a complete outdoor kitchen with a countertop surface and wash station.
What fuel options are available for the Imperial S 590iE?►
The Imperial S 590iE is available in both natural gas (NG) and liquid propane (LP). Select the correct fuel version at the time of purchase — the two versions are separate SKUs and are not interchangeable without a conversion kit.
What are the assembled dimensions of the Imperial S 590iE?►
The assembled island measures approximately 49.12" H × 94.98" W × 30.9" D and weighs 651 lbs. in both LP and NG configurations.
What cabinet storage is included with the S 590iE island?►
The island includes a five-burner 304 stainless steel cabinet with four storage drawers under the main grill, a side burner cabinet with tank storage for a propane tank (LP version), and a one-door / one-drawer storage cabinet. The cabinet and base feature a premium powder-coat paint finish.
What warranty covers the Imperial S 590iE?►
The Imperial S 590iE is covered by Broil King's manufacturer warranty, honored directly by Broil King. Broil King provides limited lifetime coverage on stainless steel/porcelain steel lid components and the stainless steel cookbox, plus 15 years on cast stainless/stainless steel grids, Dual-Tube burners, the side and rear burners, stainless steel Flav-R-Wave, stainless steel components, and remaining parts and paint. Labor, service calls, shipping, removal, and reinstallation are excluded. Warranty applies only to products purchased and used in the country of purchase.
How does the Imperial S 590iE compare to the Imperial S 690iE?►
The S 690iE has two independent cookboxes (500 sq. in. + 250 sq. in.) and six main burners at 60,000 BTU; the S 590iE has one cookbox at 625 sq. in. and five main burners at 55,000 BTU. Both share the same cast stainless steel cooking grids, 304 stainless steel Flav-R-Wave system, rotisserie burner and kit, side burner, and 304 stainless steel cabinetry. Neither model includes iQue smart control. Choose the S 590iE if one cooking environment at 875 sq. in. total covers your needs; choose the S 690iE if you regularly need two simultaneous temperature zones.
Does this island require professional installation?►
The island arrives largely pre-assembled and requires final setup rather than full construction. Natural gas connections must be made by a licensed gas professional. LP propane setup should follow the owner's manual instructions. If you are adding a sink (sold separately), plumbing connections should be handled by a licensed plumber. Due to the size and weight of this island, plan for at least two people for unloading and positioning. An Assembly Manual is linked in the Manuals & Documents section above.
