4400W Open Frame Dual Fuel Inverter Generator w/ CO Alert MB5040DC

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Sale price$409.99 Regular price$449.99
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 4400W Peak / 4000W Running: Dual Fuel (Gasoline + Propane),  Electric & Recoil Start

🛡️ CO Alert™ Auto Shutoff: Low Oil Shutdown Protection

🔌 4 Outlets + USB:  120V 30A (RV) + 2x 120V 20A, 12V DC + 5V USB Port

🔇 Open Frame Design (72dB): 98 lbs With Wheels

 Long Runtime: Up to 10 Hours (Gas) / 6 Hours (Propane)

🏆 EPA Certified , 2-Year Warranty

Perfect For: Job Sites • Emergency Backup • RV Use

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2-Year Warranty
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Clear Control Panel


2×120V 20A, 1×120V 30A RV, 1×DC 12V

Clear Control Panel


2×120V 20A, 1×120V 30A RV, 1×DC 12V

Co Alert

Co Shutdown Technology

Co Alert

Co Shutdown Technology

Why Dual Fuel?

Eco-friendly, cost-efficient, and propane-ready for longer storage and cleaner energy.

Why Dual Fuel?

Eco-friendly, cost-efficient, and propane-ready for longer storage and cleaner energy.

Customer Reviews

Based on 23 reviews
87%
(20)
13%
(3)
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D
Dana H.
Reliable for Farm Use

We use this on our small horse farm to power electric fencing and lights in the barn during outages. It's held up through a few heavy storms. Definitely dependable and worth every penny.

S
Sandra
RV Trips Just Got Easier

Took this on a July road trip through Utah with the RV. Compact enough to haul and plenty of juice to power our small AC and microwave. Used propane mostly, and it ran great! CO alert is a smart safety feature.

P
Peter Fisher
Good Unit, A Bit Loud

Generator runs well and does everything it promises, but it¡¯s definitely not quiet. Used it at a campsite in Colorado and had to place it farther from our tent. Otherwise, solid build and love that it runs on gas or propane.

m
mizjean
Good But Shorter Runtime Than Expected

Bought this for storm prep. It does the job, but I only got around 4.5 hours on a full gas tank under medium load, not the 5.1 advertised. Still handy, but wish the tank was a little bigger.

K
Kevin J.
Lifesaver During East Coast Storm

Power went out during a brutal July storm here in Pennsylvania. This generator ran for nearly 5 hours straight on propane. Kept the fridge, lights, and fans going until the grid came back.