Duluth Forge DFS-400T-4NG Dual Fuel Ventless Fireplace 111.8cm x 40cm

Duluth Forge DFS-400T-4NG Dual Fuel Ventless Fireplace 111.8cm x 40cm

Regular price $329.90 USD
Sale price $329.90 USD Regular price $0.00 USD
Tax included. Shipping calculated at checkout.
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Enhance your living space with the Duluth Forge Ventless Gas Fireplace, expertly engineered to deliver reliable supplemental heat and timeless style. Powered by patented Dual Fuel Technology, this fireplace operates efficiently on either Natural Gas or Liquid Propane, producing up to 32,000 BTU to comfortably heat areas up to 139.4 square meters.

Featuring a furniture-grade nutmeg finish mantel and six hand-painted ceramic fiber logs, it brings the warmth and ambiance of a real fire without the need for an outside duct or chimney. Built-in thermostat control and a battery-assisted Piezo ignition ensure effortless operation, while an integrated Oxygen Depletion Sensor with automatic shut-off guarantees safety.

Key Features

Brand Duluth Forge
Model Number DFS-400T-4NG
Insert Model Number FDF400T-ZC
Product Type Ventless Gas Fireplace with Mantel
Fuel Type Natural Gas / Liquid Propane (Dual Fuel)
Maximum Heat Output 32,000 BTU
Heating Area Up to 139.4 sq m
Overall Dimensions (H x W x D) 111.8 cm x 111.8 cm x 40 cm
Insert Dimensions (H x W x D) 74.9 cm x 73.9 cm x 39.6 cm
Weight 68 kg
Finish Nutmeg
Log Count 6 Hand-Painted Ceramic Fiber Logs
Ignition Type Battery-Assisted Piezo
Control Type Thermostat Controlled
Safety Features Oxygen Depletion Sensor (O.D.S.) with Automatic Shut-off
Country of Origin USA

Highlights

  • 32,000 Maximum BTU heats up to 1,500 square feet of living space
  • Patented Dual Fuel Technology operates off Natural Gas or Liquid Propane
  • Safety Assurance: O.D.S. (Oxygen Depletion Sensor) included with automatic shut-off
  • Dual Precision Ported Ventless gas burner
  • Battery assisted Piezo ignition
  • 6 realistic hand painted Ceramic Fiber Logs
  • Thermostat Controlled
  • Nutmeg Furniture Grade Finish
  • Gas Fireplace Insert Model#: FDF400T-ZC
  • Product Dimensions: 44’H x 44’W x 15.75’D
  • Some assembly required.

Compatibility

Compatible with optional blower fan model QEB100 (sold separately). Suitable for installation in standard rooms at elevations up to 1,371.6 meters (4,500 feet).

What's included

  • Fireplace Wood Mantel – Qty. 1
  • Ventless Fireplace Insert – Qty. 1
  • Ceramic Fiber Log Set – Qty. 1
  • Hardware Pack – Qty. 1

Frequently asked questions

What fuel types can be used with this fireplace?

The fireplace features patented Dual Fuel Technology and can operate on either Natural Gas or Liquid Propane.

Does this fireplace require a chimney or flue?

No, this is a ventless fireplace system that does not require an outside chimney, flue, or ductwork.

What is the maximum heating capacity of this unit?

It generates up to 32,000 BTU and can provide supplemental heat for living spaces up to 139.4 square meters.

Are there elevation restrictions for this vent-free heater?

Yes, vent-free heaters do not operate at elevations above 1,371.6 meters (4,500 feet).

Shop with confidence. If you’re not completely satisfied, returning your order is simple and hassle-free.

Technical details

Here you can find the technical specifications and details about the product.

Payment options

We offer a variety of secure payment methods to make checkout simple and convenient. Major credit cards, debit cards, and trusted providers like PayPal, Apple Pay, Google Pay, and Shop Pay are all accepted. You can choose the option that works best for you at checkout.

For added flexibility, installment and financing options may also be available — giving you the freedom to pay over time

Shipping info

Orders are processed and shipped within 1–3 business days. Delivery times and costs depend on your location and are shown at checkout. Orders over €100 qualify for free standard shipping. Please note there may be delays during holidays or promotional periods.

Remember to collect your order. If an order is returned due to non-collection, a processing fee may be charged.

We do not use partial deliveries. If an item is unavailable, the remaining products will be shipped and the missing items refunded. If your original order qualified for free shipping, you will not be charged in this case.

Duluth Forge DFS-400T-4NG Dual Fuel Ventless Fireplace 111.8cm x 40cm

Duluth Forge DFS-400T-4NG Dual Fuel Ventless Fireplace 111.8cm x 40cm

Regular price $329.90 USD
Sale price $329.90 USD Regular price $0.00 USD

Reviews from verified buyers

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Unmatched Clarity

The sound is incredibly accurate — every detail comes through exactly as intended. Perfect for mixing and everyday listening alike.

Alex, Verified Buyer

Design Meets Performance

Beautiful design and uncompromising performance. These speakers not only sound amazing but also fit seamlessly into my home studio setup.

Jordan, Verified Buyer

Built to Last

I’ve tried many speakers, but nothing matches the clarity and balance of these. Reliable, powerful, and built to last.

Taylor, Verified Buyer

Professional Sound at Home

From music production to casual streaming, the sound is pure and consistent at any volume. Truly a professional-grade experience at home.

Morgan, Verified Buyer