EcoSmart Fire

EcoSmart Fire Flex 104SS Fireplace Insert

Name: EcoSmart Fire Flex 104SS Fireplace Insert
Brand: EcoSmart Fire
SKU: ESF.FX.104SS
Price: 7995.0 GBP
Availability: InStock

£7,995.00

Save £-7,995.00 Sale Sold out

In stock

Configuration All Flame Log Box – Left Log Box – Right Log Boxes – Both Sides

Burner Finish Stainless Steel Black

Product variants

Quantity

🚚 Estimated Delivery Date:

01 September 2026

Delivery date to be confirmed via email once order is placed

Overview:
- The Flex 104SS widens to 2850mm and is the first size in the Flex range where even a single log box still needs two burners to fill the remaining run — only removing both sides brings it back to one.
Design & Build:
- Zinc-sealed mild steel surround and toughened glass, built around twin Grade 304 stainless XL1200 burners in All Flame form (30,580 BTU/h combined from a 20-litre tank); Log Box Left/Right still run twin XL900 burners, and only Log Boxes Both Sides steps down to a single XL1200. The burner is available in Stainless Steel as standard, or a Black ceramic-coated finish for a flat, monochrome look, at a fixed premium.
What it does well:
- All Flame runs 9 to 14 hours per fill, the longest single-fill runtime available at this width, and is rated for a 230m³ room. Because Log Box Left and Log Box Right both keep twin burners, choosing a single log box costs comparatively little heat output against All Flame.
Trade-off worth knowing:
- At 2850mm and up to 146kg, this is a serious architectural installation, not a drop-in upgrade. If that scale is more than the room needs, the 86SS delivers a similar twin-burner All Flame experience in a noticeably narrower, lighter unit.

Delivery Information

Standard Delivery:

Ground delivery to the easiest access point on your property. Does not include inside delivery, packaging removal or assembly.

Bioethanol Fuel:

e-NRG Bioethanol may ship separately from your EcoSmart Fire order and can arrive on a different day. A separate tracking number for the fuel order will be emailed to you.

Ship Times:

Zone 1 (England / Wales): 5-10 business days.
Zone 2 (Scotland / Republic of Ireland / Northern Ireland / Isle of Man): 10-15 business days.
Please allow 1-3 business days for the order to be processed before dispatch. Estimated ship times are subject to change due to unforeseen events.

Installation Guide:

Full installation and operating instructions: https://cdn.mad-uk.com/media/version/version/ESF-CI-MASTER-FLEX_Series-_FX-V2505_-F-lr.pdf

4 configurations at one price: All Flame, Log Box Left, Log Box Right, Log Boxes Both Sides
9-14 hour burn time on the All Flame configuration
Stainless Steel or Black burner finish, +£1,000

Category	Details
Material	Mild Steel (Zinc Sealed, High-Temp Powder Coat) Surround, Toughened Glass; Grade 304 Stainless Steel Burner
Weight	146kg (All Flame), 144-145kg (log-box configurations)
Dimensions (W x D x H)	2850mm x 365mm x 807mm
Surround colour	Black
Burner finish	Stainless Steel (standard) or Black ceramic-coated (+£1,000)
Fuel	Bioethanol only (Indoor or Outdoor)
Thermal output	30,580 BTU/h (32.26 MJ/h)
Burn time	9-14 hours per fill
Fuel capacity	20 litres
Minimum room size (indoor use)	230m³
Burner compliance	EN 16647 compliant burner (manufacturer-approved)
Configuration options	All Flame chains two XL1200 burners (30,580 BTU/h, 20L, rated to 230m³). Log Box – Left/Right still need two burners each (XL900 x2, 30,000 BTU/h, 18L, 220m³) — even one box removed still leaves too wide a run for a single burner. Log Boxes – Both Sides narrows enough for a single XL1200 (15,290 BTU/h, 10L, 115m³). All four configurations are the same price.