Flex 18SS Single Sided Fireplace Insert
Enjoy an alluring flame from any angle you look at it.
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 18SS means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design.
The included AB3 Burner holds 2.5L of clean burning e-NRG bioethanol and will deliver a magical dancing flame for up to 11 hours. It is designed to deliver robust performance with the power to heat approximately 20m2, making it ideal for smaller residential spaces.
Configure & Buy
Buy online and get it delivered to your door.Inspiration
Key Features
Application
Indoor or outdoor single room application. With one open side, view the flame from the front.
Colours
Available in black, firebox comes with stainless steel burners and decorative Black Glass Charcoal.
No gas or electricity
No gas, no electricity, no chimney, no venting or external vent cap. 4 fewer General Contractors.
Clean burning
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
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.
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.
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.
Luxurious finish
Available in a timeless black finish, Flex Fireboxes come with stainless steel burners and black glass charcoal.
Wind screen
Included integrated windscreen sits flush behind frame.
Technical Specifications
Construction
- Weight 25.70kg [56.66lb]
- Model Dimensions mm [in] W 578mm [22.8in] D 365mm [14.4in] H 807mm [31.8in]
- Viewing Area mm [in] W 378mm [14.9in] D 340mm [13.4in] H 502mm [19.8in]
- Materials Mild Steel & Toughened Glass
- Colours
Accessories
Includes everything you need to easily operate and protect your investment for many years to come.Fuel Efficiency
Volume Capacity
Heats on Average
Minimal Room
Thermal Output
Burn Time
FAQ's
View AllHow to install a TV or AV equipment above an ethanol fireplace?
This design can be achieved as long as the TV is protected. You have 3 possible solutions:
Solution 1: The TV needs a non-combustible mantel/ledge to act as a heat shield
Solution 2: The TV needs to be recessed in a niche
Solution 3: The TV needs to sit back off the level of the flame

What is bioethanol fuel?
Bioethanol (also known as methylated spirits or simply ethanol) is a form of renewable energy. It’s a clear, colourless liquid that’s commonly made from fermenting the sugar and starch components of plant by-products like sugarcane and grain crops.
How do I fill my ethanol fireplace?
With EcoSmart Fire’s proprietary tools and procedures, filling your ethanol fireplace with e-NRG bioethanol fuel is fast and easy.
Step 1: Remove the bottle nozzle cap and carefully insert into the filling point
Step 2: Push and hold the green button. The nozzle will automatically stop filling once the reservoir is full.
Step 3: Replace the nozzle cap.
You can view a step-by-step filling video.
What are some key benefits – compared to other heating options?
When you choose ethanol as your fuel source over gas or wood, you are totally simplifying your installation requirements and costs. There's no flue or chimney required when burning ethanol, which means that you have the ultimate in design flexibility to achieve an open fire in so many more areas of your home - both indoors and out.
Is Bioethanol easily obtainable?
Yes, you can have fuel delivered to public and private premises in many countries.
Do bioethanol fireplaces produce heat?
Yes, although it does depend upon the size of the fireplace and also the size of the room itself. But a fire of an appropriate size can produce a good level of heat when considered properly in terms of its actual output and how it is positioned in the space. Bioethanol fires are a secondary source of heat that deliver a myriad of lifestyle benefits that can’t be achieved from primary heat sources such as radiators or reverse cycle air conditioning.
Why use bioethanol?
Bioethanol, a renewable energy, is the cleanest and most efficient fuel on the market, which means there are no emissions and no soot or ash to clean up.
Do I need to service my ethanol fireplace in any way?
Yes, normal maintenance and care is very important! Instructions are included in the Installation, Operating and Maintenance Manual supplied with your EcoSmart Fire product.
You May Also Like
Single Sided

Flex 122SS.BX2 Single Sided Fireplace Insert
EcoSmart Fire $13,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 68SS.BXL Single Sided Fireplace Insert
EcoSmart Fire $7,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 158SS Single Sided Fireplace Insert
EcoSmart Fire $17,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 68SS.BX2 Single Sided Fireplace Insert
EcoSmart Fire $7,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 60SS.BXR Single Sided Fireplace Insert
EcoSmart Fire $6,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 86SS.BX2 Single Sided Fireplace Insert
EcoSmart Fire $9,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 68SS.BXR Single Sided Fireplace Insert
EcoSmart Fire $7,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 68SS Single Sided Fireplace Insert
EcoSmart Fire $7,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 158SS.BX2 Single Sided Fireplace Insert
EcoSmart Fire $17,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 140SS.BXR Single Sided Fireplace Insert
EcoSmart Fire $15,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 122SS Single Sided Fireplace Insert
EcoSmart Fire $13,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.

Flex 104SS.BX2 Single Sided Fireplace Insert
EcoSmart Fire $11,995.00 Integrated within cabinetry or a fireplace setting, these single sided fireplace inserts offer the perfect blend of functionality and design aesthetics.How Can We
Help?
Step-by-step guidance to find the right solution for your needs, trade professional benefits, and ongoing support before and after your purchase.
Live Chat-
Project Assistance
From product selection, to material sourcing, and project reviews, our team is here to help.
-
Dedicated Support
Our unparalleled support and versatile product range makes designing with fire simpler than ever.
-
1-on-1 Screenshare
Can't make it to our showroom? Book an online consultation with our team of specialists.
-
Business Programs
Smart pricing, personalised support and unparalleled creative freedom.
-
Exclusive Pricing
Enjoy exclusive discounts across our entire range of fireplaces and fire pits.