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EcoSmart Fire Flex Single Sided Ethanol Firebox

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Save $219.50
Original Price $2,414.50
Current Price $2,195.00

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EcoSmart Fire Flex Single Sided Black Ethanol Firebox

EcoSmart Fire Flex Single Sided Built-in Ethanol Firebox is a modern, clean and green fireplace solution for your indoor and outdoor space. The minimalistic design of this firebox with all focus on the eye-catching flames will compliment any interior, from modern to traditional.

Installation is flexible and doesn't require expensive remodeling. This ethanol firebox runs on liquid bioethanol fuel and does not need to be connected to a gas line or electricity. Chimney or vent is not necessary either. Just install it where you want it, pour some fuel, light it up and enjoy beautiful real flames without any smoke, fumes, or mess.

Available in 9 sizes from 15" to 159" wide, based on the firebox viewing area.

Enjoy the warmth and ambiance of a real flame fireplace any time and anywhere with an EcoSmart Fire ethanol fireplace!

Flex series ethanol fireboxes are available in configurations and sizes to make sure that you get the fireplace you want. Just choose based on where it will be installed or your custom design: Click here to see them all.

This firebox is also available in other configurations: EcoSmart Fire Flex Collection


  • Built-in Ethanol Firebox for Indoor or Outdoor Installation.
  • Ventless - all the fuel is housed within Flex’s self-contained burner so you don’t have to run a gas line or electric wires through your walls. And because e-NRG Bioethanol is clean-burning, you don’t need a flue or a chimney
  • Easy or no Maintenance Required.
  • Quick and Easy Assembly - requiring virtually no assembly, Flex Fireboxes are designed to be placed into the desired location, safely secured into position, and operated immediately.
  • Zero Clearance - self-contained, zero clearance construction allows your Flex fireplace to be framed into wood or metal studs, providing installation freedom and flexibility for builders.
  • Luxurious Finish - timeless black finish firebox with high-quality 304 stainless steel burner and black glass charcoal.
  • Rust Proof - zinc sealed steel construction powder coated with super hi-temp black paint prevents rusting so all fireplaces can be used both indoors or outdoors.
  • Seamless Construction - ensures no leaks or corrosion on the seams.
  • Sliding Door Shut-off Mechanism - quickly and safely extinguish the fire and regulate flame height and fuel consumption.
  • Adjustable Flame - allows you to control the flame intensity and heat output.
  • Safe Filling - safer than most other ethanol fireplaces.
  • Glass Windscreen Included - for safety and wind protection.
  • Comes With: Lighting Rod, Jerry Can, Bottle Adaptor, Fire Lighter, Butane (for lighter), and Black Glass Charcoal.
  • UL Listed - thoroughly tested to meet safety standards in the USA.
  • ISO Certified
  • ICC Certified
  • 2-Year Manufacturer's Warranty.
  • Uses Clean-burning Bioethanol Fuel (Purchase separately).

This firebox is also available in other configurations: EcoSmart Fire Flex Collection


15" 0.7 Gallons 8 - 11 hours 5,800 215 sq. ft. 19.8" L x 14.9" W x 13.4" D 19.84 lbs
32" 1.3 Gallons 10 - 13 hours 11,430 431 sq. ft. 19.8" L x 31.9" W x 13.4" D 85.32 lbs
42" 1.8 Gallons 9-12 hours 13,650 538 sq. ft. 19.8" L x 41.9" W x 13.4" D 110 lbs
50" 2.4 Gallons 8-13 hours 15,000 646 sq. ft. 19.8" L x 50" W x 13.4" D 131 lbs
68" 2.6 Gallons 9-14 hours 15,290 700 sq. ft. 19.8" L x 68.1" W x 13.4" D 170 lbs
86" 4.8 Gallons 8-13 hours 30,000 1,292 sq. ft. 19.8" L x 86.2" W x 13.4" D 215 lbs
104" 5.3 Gallons 9-14 hours 30,580 1,399 sq. ft. 19.8 " L x 104" W x 13.4" D 322 lbs
122" 7.1 Gallons 8-13 hours 45,000 1,938 sq. ft. 19.8" L x 122" W x 13.4" D 378 lbs
159" 7.9 Gallons 9-14 hours 45,870 2,099 sq. ft. 19.8" L x 159" W x 13.4" D 490 lbs



WARNING: The use of this product and byproducts of the combustion of fuel, such as propane, natural gas, and/or ethanol can expose you to chemicals including formaldehyde, which are known to the State of California to cause cancer, and including acetaldehyde, which are known to the State of California to cause birth defects or other reproductive harm. For more information go to

Free and Fast Shipping! Read our full Shipping Policy here.

We offer market-leading 30-Day Free Returns! Read more about our Returns Policy here.

EcoSmart Fire offers a full 2-year warranty from date of purchase on stainless steel parts including raw, linished and powder coated.

Mild steel including powder coated and chrome plated, concrete composite, glass, leather, fabric and MDF (painted or cement rendered) are covered for 1 year from the date of purchase.

Chips and scratches are not covered by warranty. Natural variation in color, texture and porosity may occur with Concrete Composite products and are considered inherent and valued qualities of the material. Non-structural hairline cracks are possible and shall not be considered a manufacturing defect.

What if I have modified the product?

If the product has been modified or altered in any way, it will not be covered under warranty unless the modifications were approved in writing by EcoSmart Inc or The Fire Company Pty Ltd. However, EcoSmart Fire is happy to provide assistance with any issues you are experiencing.

How do I submit a warranty claim?

You will need to provide proof of purchase along with a description and images of the issue. Once you’ve gathered this information, please email all details to Your claim will be reviewed within 7 days and you will be contacted with a decision and the next steps, if applicable.

Customer Reviews
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Sherry S.
Philippines Philippines
I recommend this product
I cannot wait to fire this beauty up

Specifically designed for a single room application, the Flex Single Sided Fireplace Insert features one open side, enabling the flame to be viewed from the front. The bioethanol, true zero-clearance fireplace can be used to create a striking addition to a feature wall, integrated within cabinetry or a fireplace setting - whether in a residential dining room, indoor or outdoor living area, or commercial spaces.The clean lines and 'all flame' configuration of the Flex 68SS means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design.The longest of the XL Burner series, the XL1200 delivers a stunning linear flame. This elongated burner can heat up to 700ft2 and provides the ideal bioethanol fire for commercial and hospitality spaces such as open plan restaurants and bars.Each burner holds 2.6 gallons of fuel, and can deliver a stunning flame for up to 14 hours.

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