Flex 158BN Bench Fireplace Insert
Create stunning custom indoor and outdoor fireplaces.
Designed as a room divider or stunning centrepiece with all open sides, the mesmerising flame can be viewed from the top, front, back, left and right sides. With the Flex Bench fireplace insert, the entire viewing area is dedicated to the flame, creating a harmonious blend of the traditional fire pit and contemporary fire design.
The clean lines and 'all flame' configuration of the Flex 158BN means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design.
One of the longest flames available in the Flex Series is created by using 3 of our ever-popular XL900 Burners. With an overall heating capacity of 2099ft2 this appliance is best suited to large open spaces - think hotel lobby, large open plan restaurants.
Each burner holds 2.6 gallons of fuel, and can deliver a stunning flame for up to 14 hours.
Configure & Buy
Buy online and get it delivered to your door.Inspiration
Key Features
Multi room
With all open sides, the firebox mesmerising flame can be viewed from the top, front, back, left and right sides.
No gas or electricity
No gas, no electricity, no chimney, no venting or external vent cap. 4 fewer General Contractors.
Self contained
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.
Zero clearance
The 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.
Colours
Available in black, firebox comes with stainless steel burners and decorative Black Glass Charcoal.
Luxurious finish
Available in a timeless black finish, Flex Fireboxes come with stainless steel burners 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.
Wind screen
Includes a translucent, toughened glass fire screen that provides an added layer of safety, peace of mind and comfort.
Clean burning
The fireplace inserts are fuelled by eco-friendly clean-burning e-NRG bioethanol, a renewable energy that emits no soot or smoke.
Technical Specifications
Construction
- Weight 262lb [119kg]
- Model Dimensions in [mm] W 161.9in [4112mm] D 13.9in [354mm] H 13.7in [347mm]
- Viewing Area in [mm] W 158.1in [4015mm] D 13.4in [340mm]
- 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

Do ethanol fireplaces smell?
All heating appliances have their own smell be it gas, wood or electric - ethanol fireplaces are no different. e-NRG ethanol fuel is made of fermented plants like sugarcane or corn and is essentially a liquid alcohol. To safely make “de-natured” and unfit for consumption, substances have been added. The burning of these substances may cause a slight smell upon initial lighting and when the flame is extinguished – similar to when you blow out a candle. e-NRG ethanol fuel is the only fuel recommended for your EcoSmart Fire ethanol fireplace. e-NRG ethanol fuel has the lowest odor and longest burn time on the market. The nice thing about using ethanol is that it’s not dry like gas or smokey like wood.
Can EcoSmart Fires be installed everywhere?
Almost everywhere! EcoSmart Fires cannot be installed into small rooms that are less than our minimum room size which is burner specific. For all other installations, you must comply with our compulsory clearances and installation instructions. Approval from building authorities may be required prior to installation in your area. Please make sure you contact appropriate parties before installing your EcoSmart Fire.
Why use an ethanol fireplace?
An ethanol fireplace is an eco-friendly and cost-effective alternative to gas fireplaces and wood burning fireplaces. Enjoy the warmth and aesthetic benefits of a traditional fireplace without the smoke, soot or ash in your home. Unlike gas fireplaces or traditional wood burning fireplaces, EcoSmart Fire’s ethanol fireplace inserts require no venting, no gas line, no electricity - eliminating the need and cost of three sub contractors.
Are EcoSmart Fires easy to install?
EcoSmart Fires are designed to be easily installed and operated. Without the need for a flue or pipe connection, EcoSmart Fires are extremely flexible and can be incorporated at any stage of your interior decorating, renovating or building works. For detailed specifications please contact your local distributor.
What are the benefits of a zero clearance ethanol fireplace insert?
EcoSmart Fire’s Flex Fireplace Series has the necessary clearances to combustible frame components already built-in meaning they can be framed with wood studs. This gives you the freedom to install your ethanol fireplace insert in small and unique spaces. When selecting a location for the fireplace it is important to consider the required minimum room sizes and clearances. Please reference our Flex Series installation manual.
How long will my ethanol fireplace burn?
Burn times for our ethanol fireplaces vay based on flame size and fuel capacity of the burner. EcoSmart Fire’s ethanol fireplaces will burn between 8-13 hours when full.
Do ethanol fireplaces give off heat?
EcoSmart Fire’s indoor ethanol fireplaces are ventless, meaning all the heat stays in the room rather than escaping up a flue or chimney like it would with a traditional wood burning fireplace. Increased heat retention also means increased fuel efficiency. EcoSmart Fire’s collection of ethanol fireplaces offer a heat output ranging from 5,000 BTU - 20,000 BTU’s.
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