Broil King Monarch 390 Gas Grill w/ Side Burner
Broil King Monarch 390 – Freestanding Gas Grill with Side Burner and Rotisserie
The Broil King Monarch 390 is a premium freestanding gas grill designed for buyers who want dependable grilling power, added side-burner versatility, and rotisserie capability in a compact backyard-friendly format. Built with 3 stainless steel Dual-Tube burners delivering 40,000 BTUs, this model also includes a 10,000 BTU side burner, a 15,000 BTU rotisserie burner, and a rotisserie kit for more flexible outdoor cooking. The Monarch 390 features 330 square inches of primary cooking space, 500 square inches of total cooking space, reversible heavy-duty cast iron cooking grids, a stainless steel Flav-R-Wave cooking system, painted steel drop-down side shelves, and an enclosed cabinet base. For shoppers comparing premium freestanding BBQ grills, the Monarch 390 stands out with propane or natural gas options and a practical mix of compact size and expanded cooking versatility.
Three-burner power with side burner and rotisserie flexibility
With three stainless steel Dual-Tube burners producing 40,000 BTUs, the Monarch 390 is built for steady heat across the main grilling surface while keeping a manageable footprint for patios and backyard cooking areas. The added 10,000 BTU side burner gives you more flexibility for sauces, sides, and pan cooking, while the 15,000 BTU rotisserie burner and included kit expand your options for poultry, roasts, and more elevated meals.
Cast iron cooking grids and Flav-R-Wave flavor performance
Reversible heavy-duty cast iron cooking grids help support strong searing performance and better grilling control, while the stainless steel Flav-R-Wave cooking system helps vaporize drippings and return richer barbecue flavor to the food. These core Broil King cooking components help the Monarch 390 deliver a more substantial cooking experience than many compact freestanding grills in its class.
Compact freestanding design with practical workspace
Painted steel drop-down side shelves give you useful prep space when needed and help conserve room when folded, while the enclosed cabinet base creates a cleaner and more finished patio presentation. For buyers building a more complete outdoor cooking setup, the Monarch 390 offers a balanced mix of compact size, stronger versatility, and dependable Broil King construction.
A patio-friendly grill with premium backyard versatility
Because it combines a side burner, rotisserie system, and enclosed freestanding base in a smaller overall footprint, the Monarch 390 is especially appealing for homeowners who want more capability without stepping into a much larger grill category. It is a strong option for routine family use, weekend entertaining, and backyard setups where space and flexibility both matter.

The Monarch 390 combines dependable Broil King grilling performance, cast iron cooking surfaces, and expanded cooking flexibility in a compact freestanding layout. Its enclosed base and folding side shelves help create a clean, functional patio setup without taking up unnecessary room.
From side-burner prep to rotisserie-ready roasting and everyday grilling, this Broil King model is built for a broader outdoor workflow that still feels practical and patio-friendly. Buyers exploring premium outdoor cooking equipment will appreciate its balance of size, performance, and versatility.

Broil King Monarch 390 Features & Benefits
- 3 stainless steel Dual-Tube burners: Delivers 40,000 BTUs of dependable grilling power for everyday outdoor cooking.
- 10,000 BTU side burner: Adds flexibility for sauces, sides, and more complete meal prep outdoors.
- 15,000 BTU rotisserie burner: Supports rotisserie cooking for poultry, roasts, and more advanced grilling menus.
- 330 sq. in. primary cooking space: Gives you practical room for family meals, routine grilling, and small-group entertaining.
- 500 sq. in. total cooking space: Adds more usable capacity with the porcelain coated warming rack included.
- Reversible heavy-duty cast iron cooking grids: Provides strong heat retention and versatile grilling control.
- Rotisserie kit included: Adds ready-to-use versatility right out of the box.
Choose a Broil King grill built for dependable performance, side-burner versatility, and rotisserie-ready backyard cooking.
Get expert help selecting the right Monarch 390 fuel option for your patio and outdoor cooking style.
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Contact Us for a QuoteBroil King Monarch 390 Specifications
| Brand | Broil King |
| Model | Monarch 390 |
| Collection | Monarch Freestanding Series |
| Item Numbers | 138-834284-LP (LP), 138-834287-NG (NG) |
| Availability Note | LP listing marked NLA; NG listing active |
| Fuel Type | Propane Gas or Natural Gas |
| Main Burners | 3 stainless steel Dual-Tube burners |
| Main Burner Output | 40,000 BTU |
| Side Burner Output | 10,000 BTU |
| Rotisserie Burner Output | 15,000 BTU |
| Primary Cooking Space | 330 sq. in. |
| Total Cooking Space | 500 sq. in. |
| Cooking Grids | Reversible heavy-duty cast iron |
| Warming Rack | Porcelain coated |
| Cooking System | Stainless steel Flav-R-Wave cooking system |
| Side Shelves | Painted steel drop-down side shelves |
| Base | Enclosed cabinet base |
| Included Accessories | Rotisserie Kit |
| Weight | 121 lbs. (LP) / 122 lbs. (NG) |
| Assembled Dimensions | 51.8" W x 22" D x 48" H |
Still deciding? Explore Deck and Den’s buying guides hub and start with a grill buying guide to compare premium freestanding grills, compact footprints, and fuel options.
Broil King Monarch 390 Info & Guides
Broil King Grills Product Brochure
Broil King Monarch 390 Owners Manual (LP)
Broil King Monarch 390 Owners Manual (NG)
Broil King Monarch 390 Assembly Manual