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Description
Southbend (Middleby) 4481AC-2CL Ultimate Gas RangesUltimate 48" Gas Restaurant Range 4 Open Burners 24" Charbroiler (Left) Convection Oven & Cabinet Base Built for kitchens that never slow down, the Southbend Ultimate Series model 448 AC gives you the power of four clog free burners, the flavor of a cast iron charbroiler, and the even bake of a full size convection oven all in just 48 inches of line space. Heavy gauge stainless steel, a front mounted shut off, and 228,000 total BTU make this range a
Ultimate 48" Gas Restaurant Range
4 Open Burners • 24" Charbroiler (Left) • Convection Oven & Cabinet BaseBuilt for kitchens that never slow down, the Southbend Ultimate Series model 448-AC gives you the power of four clog-free burners, the flavor of a cast-iron charbroiler, and the even bake of a full-size convection oven — all in just 48 inches of line space. Heavy-gauge stainless steel, a front-mounted shut-off, and 228,000 total BTU make this range a long-term workhorse for high-volume restaurants, hotels, and institutional foodservice.
Why You’ll Love It
- 4 × 33,000 BTU non-clog burners with cast-iron grates — keep large stock pots in the rear without losing front-side productivity.
- 24" charbroiler (left) features removable, cast-iron grates for authentic grill marks and easy cleaning (64,000 BTU).
- 32,000 BTU convection oven with battery spark ignition, 3 chrome racks & 5 position rails for full-size pans both ways.
- 18" stainless cabinet base on the right keeps sheet pans, skillets, or spices within arm’s reach.
- 22.5" flue riser with heavy-duty shelf — perfect for holding plated dishes or smallwares.
- Front-mounted manual gas shut-off and factory-installed pressure regulator for safer, faster service calls.
- 6" adjustable stainless steel legs (casters available) meet health-code clearance on combustible floors.
- Fully welded stainless front, sides, and rail withstand daily spray-downs and the toughest rushes.
- Certified CSA & NSF; ships with 1-year parts & labor warranty.
At-a-Glance Specifications
| Overall width | 48 ⅝" (1235 mm) |
|---|---|
| Overall depth | 34" (864 mm) |
| Work height | 37" cooking surface |
| Flue riser | 22 ½" with stainless utility shelf |
| Total input | 228,000 BTU/hr (Natural gas) |
| Open burners | 4 × 33,000 BTU non-clog cast-iron |
| Charbroiler | 24" cast-iron, 64,000 BTU |
| Oven type / output | Convection, 32,000 BTU |
| Oven interior | 14" H × 26" W × 24" D, 3 racks / 5 positions |
| Cabinet base | 18" stainless storage (right side) |
| Gas connection | ¾" NPT (opposite charbroiler side) |
| Min. inlet pressure | Natural 7" W.C. | LP 11" W.C. |
| Electrical (oven fan) | 115 V / 5.9 A, 6' cord & 3-prong plug |
| Certifications | CSA, NSF |
| Warranty | 1-year parts & labor |
Engineered for Heavy-Duty Kitchens
- Porcelain-enamel oven cavity with coved corners prevents hot spots and wipes clean fast.
- Removable drip trays under the burner & charbroiler sections keep grease where it belongs.
- Spring-assisted oven door closes smoothly, minimizing wear on hinges and seals.
- Front rail holds serve-ware safely with a 4" deep stainless landing edge.
- Field-install options: doors for cabinet, casters, salamander/cheesemelter mounts, quick-disconnect hose, and more.
Cleaning Tip: Do not cover the charbroiler grates with a sheet pan while burners are on. Reflected heat can damage the unit and is not covered under warranty.
Need multiple units or easy monthly payments? Ask us about Middleby Equipment Financing.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 738 reviews
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Product Reviews
★★★★★ 5
Worked perfectly for me. Sorry I waited so long.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I was clearing a field full of mesquite trees, and my tractor tires were getting destroyed. Mesquite has nasty 3-inch thorns, and I was plugging tires constantly. Eventually, all four tires were flat at the start of each day. These tires had been plugged more than 10 times each.
I bought FlatOut Quick Strike and followed the instructions exactly. The pump dispenses about 1 oz per pump, so I put 30 pumps in each tire, and the bottle was mostly empty by the time I finished. Typical with any pump dispenser it was also difficult to get the last bit out of the bottle using the pump.
It’s been a week now. One tire has lost about 1 PSI, but the other three are still holding exactly where I set them.
Considering how badly these tires were damaged, I’m impressed so far. This is the first time I’ve gone more than a day without dealing with flats in that field.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 4
Pump is worthless
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
The sealant is good. The gallon pump is a joke. Pump stopped working 4 pumps in. Went and got another replacement pump from automotive store, also broke after 4 pumps. Ended up cleaning out an old Slime bottle and pouring in the flat out sealant in the slime bottle, so I could actually get it in my tires.
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Reviewed in the United States on May 30, 2026
★★★★★ 1
There seems to be a chronic problem with the provided dispensing pump.
Size: 1 Gallon + Tool, Set name: Off-Road Formula
I looked at online reviews of the product performance and was impressed by its purported ability seal tire punctures. While the product may (or may not) perform well, the provided dispensing pump is pathetically unsuited for the application and it is impossible to clear the pump once the material clogs the small dispensing port. Some of the reviews indicated this but i assumed that they were not very mechanical inclined customers. The product, by design, has particulates, of varying sizes, suspended in the liquid sealant. The port on pump is very small and easily becomes blocked with the sealant and particulates that cannot be cleared; even when following the instructions to do so. It is very irresponsible for the manufacturer to continue selling this item with inevitable relative failure of the pump as this is the only way to get the sealant into a tire.
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Reviewed in the United States on January 2, 2025
★★★★★ 5
Good for ebike tires
Size: 1 Gallon + Tool, Set name: Small Tire/Bicycle Formula
Got it for my son’s older ebike that my wife rides now. He kept on popping tubes, maybe because of his weight. Anyhow, I fixed it up for my wife and put some FlatOut in it to prevent flats. Seems to work so far. Got the off road FlatOut for my ebike’s fat tires. Easy to add to the tires. The pump clogs up but it’s easy to clean. I will always add this to all tires moving forward!
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Easy to use and works great
Size: 1 Gallon + Tool, Set name: Off-Road Formula
Easy to use
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Reviewed in the United States on April 22, 2026