Firman WH03662OF Dual Fuel Open Frame Inverter Generator 4500W Electri | Outbound Power
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Firman WH03662OF Dual Fuel Open Frame Inverter Generator 4500W Electric Start w/CO Alert

Original Price $1,499.00
Current Price $1,099.00

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Condition: New

SKU: WH03662OF
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Firman WH03662OF Dual Fuel Inverter Generator Overview

Power outages got you down? Need reliable backup for your RV adventures or jobsite demands? Look no further than the Firman WH03662OF Dual Fuel Open Frame Inverter Generator. This 4500-watt powerhouse delivers clean, quiet, and versatile energy to conquer any situation. Dive deep into its features and discover why it's the ultimate choice for demanding power needs:

Firman WHO3662OF Dual Fuel Open Frame Inverter Generator On A Driveway

Firman WH03662OF Dual Fuel Inverter Generator Features

Fuel Flexibility at Your Fingertips

  • Dual Fuel Technology: Run on gasoline or propane, offering adaptability and convenience. Choose the fuel that's readily available or most cost-effective at the moment.
  • Effortless Switching: Seamlessly transition between fuels without restarting the generator, ensuring uninterrupted power flow.
  • Gasoline Power: 3650W running watts and 4500W peak watts provide ample power for most appliances and tools.
  • Propane Power: 3300W running watts and 4100W peak watts offer efficient fuel consumption and cleaner emissions.

Unmatched Convenience and User-Friendliness

  • Electric Start: Effortlessly kick things off with the push-button electric start, eliminating the need for manual pull cords.
  • CO Alert: Built-in carbon monoxide sensor automatically shuts down the generator when harmful levels are detected, prioritizing your safety.
  • Quiet Operation: Enjoy noise levels as low as 69 dBA, comparable to a normal conversation, making it ideal for campsites, sensitive environments, or noise-restricted areas.
  • Open Frame Design: Provides lightweight portability and efficient cooling, perfect for temporary power needs or mobile applications.

Built to Last, Engineered to Perform

  • Durable Construction: Heavy-duty steel frame and high-quality components ensure long-lasting reliability in demanding environments.
  • Fuel Efficiency: Experience extended run times with lower fuel consumption, thanks to optimized engine design and efficient fuel delivery.
  • Parallel Capability: Double your power output by connecting two WH03662OF units in parallel (parallel kit sold separately). Ideal for powering larger loads or multiple appliances simultaneously.
  • Multiple Outlets: Equipped with two 120V AC outlets and a 50A outlet, providing versatility for powering various devices and equipment.

What's In The Box

  • 1 x Firman WH03662OF Dual Fuel Open Frame Inverter Generator 4500W Electric Start w/CO Alert
  • 1 x Engine Oil Bottle
  • 1 x Oil Funnel
  • 1 x Spark Plug Wrench
  • 1 x Double Open-Ended Wrench (10mm,12mm)
  • 1 x 12V Battery Cable
  • 1 x LPG Regulator with Hose Holder
  • 1 x Adaptor
  • 1 x Parallel Cable and Holder

Firman 3-Year Warranty

Firman warrants to the original purchaser that the mechanical and electrical components will be free of defects in material and workmanship for a period of one (1) year (parts and labor) and three (3) years (parts and technical support) from the original date of purchase 90 days [parts and labor] and 180 days [parts] for commercial & industrial use.

If the product is still under warranty and after technical evaluation the product is determined to be defective as a result of manufacturing, not due to misuse or modification of the product, then Firman will replace the product.


Firman WH03662OF Dual Fuel Inverter Generator Specifications

Output Specifications

Running Watts 3650 Gas | 3300 LPG
Starting Watts 4500 Gas | 4100 LPG
AC Voltage 120
Frequency (Hertz) 0
Decibels 69dB @ 1/4 load
Run Time Up to 18 Hrs
THD @ Full Load THD @ Full Load 3%



CARB Certified Yes
EPA Certified Yes
cETL Certified Yes
NOM Certified No
ANSI/PGMA G300-2018 Yes
UL Certified No


Control Panel

Recoil Start Yes
Electric Start Yes
5-20R 120V 20A DUPLEX 2
14-50R 50A-120V 1
L5-30R 30A-120V 1
DC 8.3A-12V 1
USB 2.1/1.0A-5V 2
CO Alert Yes


Generator Specifications

Low Oil Shutoff Yes
Power Stream Alternator Yes
Cast Iron Sleeve Yes
UPC 840876136621
Unit Dimensions 24.5" x 24.1" x 23"
Unit Weight 119 lbs.
Carton Carton Dimensions 28.7" x 21.1" x 21.3"
Carton Weight 132 lbs.


Fuel System Specifications

Fuel Type Gas & LPG
Tank Size 6 Gallon
Steel Gas Tank


Wheel Kit

Wheels 9" Never Flat Wheels
Handle Single Folding Handle w/Grip


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