---
product_id: 677604087
title: "WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400iM)"
brand: "wen"
price: "฿47056"
currency: THB
in_stock: true
reviews_count: 8
category: "Wen"
url: https://www.desertcart.co.th/products/677604087-wen-rv-ready-4000-watt-open-frame-inverter-generator-gn400im
store_origin: TH
region: Thailand
---

# 4000W surge power 7+ hrs runtime Parallel-ready WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400iM)

**Brand:** wen
**Price:** ฿47056
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up smart, stay connected longer!

## Quick Answers

- **What is this?** WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400iM) by wen
- **How much does it cost?** ฿47056 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/677604087-wen-rv-ready-4000-watt-open-frame-inverter-generator-gn400im)

## Best For

- wen enthusiasts

## Why This Product

- Trusted wen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fuel-Smart Eco Mode:** Automatically adjusts engine speed to save gas and reduce noise—power meets efficiency.
- • **Parallel Connection Ready:** Double your power by linking two units seamlessly with the Parallel Connection Kit.
- • **Lightweight & Portable Design:** 30% lighter than standard 4000W generators for effortless mobility and setup.
- • **Versatile Outlets for Every Need:** Includes RV-ready TT-30R, USB ports, and multiple 120V receptacles for all your devices.
- • **Clean, Stable Power for Sensitive Tech:** Pure sine wave output with <1.2% THD keeps your devices safe and sound.

## Overview

The WEN RV-Ready 4000-Watt Open Frame Inverter Generator delivers clean, reliable power with a 212cc 4-stroke engine producing 4000 surge watts and 3500 running watts. Its pure sine wave output ensures safe operation of sensitive electronics, while the eco mode optimizes fuel consumption for over 7 hours of runtime on a 1.85-gallon tank. Weighing 30% less than typical generators, it’s designed for portability and convenience, featuring multiple outlets including RV-ready and USB ports. Parallel-ready capability allows linking two units for increased power, all backed by a two-year warranty.

## Description

Remember when you had clean and quiet portable power? The WEN® 4,000-watt inverter generator provides clean energy, free of voltage spikes and drops for safe use with laptops, phones, and other sensitive electronics. Designed to mirror a pure sine wave, this generator limits total harmonic distortion to under 0.3 percent at no load and under 1.2 percent at full load, making it safe to run sensitive electronics. Our ultra-efficient 1.85-gallon tank provides over seven hours of half-load run time. Maximize fuel economy by engaging the eco-mode switch. This allows the generator's engine to automatically adjust its fuel consumption as items are plugged into and unplugged from the panel, preventing the unnecessary usage of gasoline. Need more energy? Easily link up two generators using a WEN® Parallel Connection Kit (sold separately) in order to share wattage amongst multiple units. Low-oil and low-fuel automatic shutdown combine with the built-in overload protection and indicator lights to safeguard both your generator and your electronics from damage. And because it's a WEN® product, your open frame inverter generator comes backed by a two-year warranty, a nationwide network of skilled service technicians, and a friendly customer help line, all to make sure you remember WEN®.

Review: Affordable and Reliable Power!!! - I purchased this generator specifically for emergency situations and it's exceeded my expectations. My goal was to find something affordable yet powerful enough to run two electric heaters in the winter or a portable A/C unit in the summer—and still have juice left for essentials like a lamp, phone chargers, and our modem/router. This unit handles all of that with ease. It may not have the extra bells and whistles found in higher-end inverter models, but I didn’t need those. What I wanted was reliability and simplicity, and this generator delivers. It starts with one pull and hums along at a reasonable volume (around 50 decibels from 25 feet away), which is perfectly in line with similar units. One standout feature is the eco mode, which adjusts the engine speed based on the power demand—saving fuel and reducing noise when the load is light. I also really appreciate the open-frame design—it makes it super easy to drain the carburetor after use, a huge convenience. Unlike some models, this generator doesn't have a carbon monoxide shutdown sensor. Personally, I prefer it that way. I’m very aware of the safety rules when operating a generator and never run it indoors or in confined spaces. Without the auto-shutdown, I don’t have to worry about wind triggering unnecessary shut-offs. It is a bit heavier than I anticipated, so I picked up a folding hand truck and now it's fully mobile—problem solved. It comes with a standard two-year manufacturer warranty, and I opted for the extended protection plan, giving me four years of peace of mind. Overall, I’m extremely satisfied with this purchase. It gives me confidence that we'll have power in any situation.
Review: Powerful, Reliable, and Easy to Use - The WEN 5,600-Watt Dual Fuel Portable Generator is excellent! It delivers plenty of power for both home and outdoor use, and the dual-fuel option (gasoline and propane) adds great flexibility. Setup was straightforward, and starting the generator is easy and reliable every time. It runs smoothly and feels well-built and durable, giving confidence during power outages or outdoor projects. If you need a dependable portable generator with strong performance, this one is a top choice. Highly recommend! This is our second purchase because we bought one for our dad.

## Features

- Generates clean power to safely operate sensitive electronics such as phones, tablets, TVs, and computers
- Parallel-ready panel allows you to connect any 2 WEN inverter generators for increased wattage output
- 212cc 4-stroke engine produces 4,000 surge watts and 3,500 rated watts
- Lightweight body weighs 30% less than a standard 4000-watt generator
- Includes two 120V NEMA 5-20R receptacles, two 5V USB ports, one 120V RV-ready TT-30R receptacle, and a two-year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DJDR9H7Z |
| Additional Features | Lightweight |
| Best Sellers Rank | #16,921 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #65 in Outdoor Generators |
| Brand | WEN |
| Brand Name | WEN |
| Color | Orange |
| Customer Reviews | 4.4 out of 5 stars 3,355 Reviews |
| Engine Displacement | 212 Cubic Centimeters |
| Engine Type | 4 Stroke |
| Frequency | 60 Hz |
| Fuel Type | Gasoline |
| Ignition System Type | recoil start |
| Included Components | Two 120V NEMA 5-20R receptacles, two 5V USB ports, one 120V RV-ready TT-30R receptacle, and a two-year warranty |
| Item Dimensions L x W x H | 19.8"L x 13.8"W x 18.9"H |
| Item Type Name | WEN RV-Ready 4000-Watt Open Frame Inverter Generator |
| Manufacturer | WEN |
| Material Type | Metal |
| Model Name | WEN RV-Ready 4000-Watt Open Frame Inverter Generator |
| Model Number | GN400iM |
| Output Wattage | 4000 |
| Power Source | Fuel Powered |
| Recommended Uses For Product | Camping, Residential |
| Running Wattage | 4000 Watts |
| Runtime | 7 hours |
| Starting Wattage | 4000 Watts |
| Tank Volume | 1.9 Imperial Gallons |
| Total Power Outlets | 5 |
| UPC | 044459140016 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts (AC) |
| Warranty Description | Two-year warranty |
| Wattage | 4000 watts |

## Product Details

- **Brand:** WEN
- **Color:** Orange
- **Fuel Type:** Gasoline
- **Output Wattage:** 4000
- **Power Source:** Fuel Powered
- **Recommended Uses For Product:** Camping, Residential
- **Special Feature:** Lightweight
- **Voltage:** 120 Volts (AC)
- **Wattage:** 4000 watts

## Images

![WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400iM) - Image 1](https://m.media-amazon.com/images/I/819rSLjaHuL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Affordable and Reliable Power!!!
*by S***R on July 21, 2025*

I purchased this generator specifically for emergency situations and it's exceeded my expectations. My goal was to find something affordable yet powerful enough to run two electric heaters in the winter or a portable A/C unit in the summer—and still have juice left for essentials like a lamp, phone chargers, and our modem/router. This unit handles all of that with ease. It may not have the extra bells and whistles found in higher-end inverter models, but I didn’t need those. What I wanted was reliability and simplicity, and this generator delivers. It starts with one pull and hums along at a reasonable volume (around 50 decibels from 25 feet away), which is perfectly in line with similar units. One standout feature is the eco mode, which adjusts the engine speed based on the power demand—saving fuel and reducing noise when the load is light. I also really appreciate the open-frame design—it makes it super easy to drain the carburetor after use, a huge convenience. Unlike some models, this generator doesn't have a carbon monoxide shutdown sensor. Personally, I prefer it that way. I’m very aware of the safety rules when operating a generator and never run it indoors or in confined spaces. Without the auto-shutdown, I don’t have to worry about wind triggering unnecessary shut-offs. It is a bit heavier than I anticipated, so I picked up a folding hand truck and now it's fully mobile—problem solved. It comes with a standard two-year manufacturer warranty, and I opted for the extended protection plan, giving me four years of peace of mind. Overall, I’m extremely satisfied with this purchase. It gives me confidence that we'll have power in any situation.

### ⭐⭐⭐⭐⭐ Powerful, Reliable, and Easy to Use
*by F***E on February 22, 2026*

The WEN 5,600-Watt Dual Fuel Portable Generator is excellent! It delivers plenty of power for both home and outdoor use, and the dual-fuel option (gasoline and propane) adds great flexibility. Setup was straightforward, and starting the generator is easy and reliable every time. It runs smoothly and feels well-built and durable, giving confidence during power outages or outdoor projects. If you need a dependable portable generator with strong performance, this one is a top choice. Highly recommend! This is our second purchase because we bought one for our dad.

### ⭐⭐⭐⭐⭐ Good price for what you get.
*by L***5 on February 10, 2026*

So far so good. Just got it. It took about 1/2 hour from receiving the box to running on propane. Assembly was easy with included tools, added my own oil, the funnel is included. Started right up. breaking in now with about 10000 watt load. For a consumer grade generator it is well made. Keep in mind this is not an inverter so it is heavy and about as loud as a lawnmower. will be useing for power tools and a 160 amp smaw welder on friends property. Will come back and edit if any issues.

## Frequently Bought Together

- WEN RV-Ready 4000-Watt Open Frame Inverter Generator (GN400iM)
- WEN 55201 Magnetic Oil Dipstick for Inverter Generators (compatible with WEN, Yamaha, Predator)
- WEN GNC400 Weatherproof Generator Cover for 4000-Watt Open Frame Inverter Generators

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/677604087-wen-rv-ready-4000-watt-open-frame-inverter-generator-gn400im](https://www.desertcart.co.th/products/677604087-wen-rv-ready-4000-watt-open-frame-inverter-generator-gn400im)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-30*