Morso S120-21 Double Sided Wood Burning Ecodesign Inset Stove

  • Estimated Delivery 12 Weeks
(Price includes VAT and Delivery)
  • Installation Available
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Transform your living space into a realm of mesmerising ambience with the Morsø S120 Through-Wall Firebox. This exceptional creation not only brings warmth and comfort to your home but also provides a stunning visual spectacle that will captivate your senses. With glass panels on both sides, this firebox allows you to relish the enchantment of dancing flames in two separate areas simultaneously.

The wide format of the Morsø S120 creates a sense of expansiveness, spreading cosiness and relaxation throughout your entire abode. Its sleek and contemporary design seamlessly integrates with your stylish furnishings, becoming a focal point that exudes sophistication and elegance. As the flames flicker and dance within the firebox, you'll be transported to a world where art meets functionality, reminiscent of a beautiful painting or a modern flat screen TV.

To enhance your viewing pleasure, the Morsø 120 tunnel inset fireplace offers two captivating options. The hinged door variant (S120-21) provides a breathtaking panoramic view of the flames, while the frictionless guillotine door variant (S120-22) adds a touch of effortless grace to the firebox experience. Whichever option you choose, you'll be rewarded with a sight that is nothing short of awe-inspiring.

In addition to its impeccable design and performance, the Morsø S120 comes with three essential Morso Heating Grills. You can customise your firebox further by selecting your preferred colour—Black or White—for these grills when placing your order.

To complete the look and elevate the aesthetic appeal of your firebox, you have the option to include optional decorative frames. Available in either a sleek black or a refined stainless steel finish for the front and a sophisticated black finish for the rear, these frames add a touch of personalisation and finesse to your Morsø S120.

Embrace the artistry and warmth that the Morsø S120 Through-Wall Firebox brings into your home. Let it be the heart of your living space, enveloping you in a world of mesmerising ambience and tranquillity.

  • Through-wall firebox with glass on both sides for dual enjoyment
  • Wide format spreads comfort throughout your home
  • Exquisite design that complements stylish furnishings
  • Choice of hinged door (S120-21) or frictionless guillotine door (S120-22)
  • Includes three Morso Heating Grills in Black or White
  • Optional decorative frames available in black or stainless steel finish for the front and black for the rear


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Guarantee 10 Years
Efficiency 85%
Energy Rating A+
DEFRA Approved No
Airwash System Yes
Construction Steel
Flue Size 7-inch (175mm)
Fuel Type Wood Only
Flue Outlet Top Only
Fuel Grate Type Wood Burning Only
Heat Output 10kW
More Colours No
Suitable For 12mm Hearth No
External Air Compatible Yes
Distance to Combustibles - Sides 310mm
Product Range S100 Inset
Stove Window Size (Width mm x Height mm) 504mm x 304mm
Sweep Flue through Stove? Yes

Product Sizes

Morso S120-21 Double Sided Wood Burning Ecodesign Inset Stove
Overall Height 1324mm
Overall Width 773mm
Overall Depth 511mm
Depth to Centre Flue (D) 255.5mm
Inset Height 1324mm
Inset Width 773mm
Inset Depth 511mm


Product Questions 3

Can this be used as internal and external fire?
With one side on the inside and the other outside?
Question by: Chris Clempner on 21 May 2023, 20:06

Thank you for your enquiry.

This is an indoor stove only and should not be used on an exterior wall.

Hope this helps
Answer by: Damian Todd (Admin) on 23 May 2023, 13:41
You state that this stove is not external air compatible, however it has a 125mm air duct outlet on the underside. Please could you confirm that it does have an external air connection?
Question by: Tom on 15 Mar 2023, 22:47

Thank you for your enquiry.

Yes, this stove can have a direct air feed.

I will get the site updated

Hope this helps

Answer by: Damian Todd (Admin) on 11 May 2023, 11:10

I am interested in this stove. I am just wondering how you empty the ashes after lighting it? Is there a tray or an insert for emptying? I just can’t see it in the images.

Thank you
Question by: Cormac Madden on 14 Mar 2021, 17:13
Hi there Cormac, thanks very much for getting in touch with us. In the User Guide it states:

•Remove the ash from the combustion chamber at the right time and at regular intervals and empty the ash box (can be purchased for most models). If you don’t use an ash
box, the middle stone must be taken out and the ash underneath removed regularly
(about every 4 weeks). If this is not done, the pipe for supplying the combustion air may
become covered with ash, reducing the function of the insert.
•The inset must only be cleaned when it is cold

I hope this helps!
Answer by: Henry Lewis on 18 Mar 2021, 16:37

Delivery Info

Free 1 Man Delivery – For Full Details Please See Delivery Information

Our "Free Delivery" is a one-man service. The goods will arrive on a lorry that is about the size of a fire engine. (Please let us know in advance if you have restricted access or other local issues that could affect delivery).

The lorry has a tail lift that allows the driver to get the item(s) off the vehicle. The order will be packed and secured onto a pallet and the driver will have a pallet truck. He'll be able to wheel this as close as possible to your property. The pallet truck can only be wheeled over a finished surface so it's not possible to wheel it over a gravelled drive, steps, steep slopes for example. The pallets are normally about 1m wide so this is the minimum width gate they can fit through. Please note that the driver is not insured to unpack or carry the item(s) into your house.

Fitting Kits and Liner Packs might arrive separately by courier delivery on the same day unless specified/requested in advance. An email confirmation will be sent if this is the case.

If the goods are showing 48hr delivery, then this is the quickest time we're able to deliver these items (We do not deliver at weekends). You'll be asked to select a delivery date when purchasing the goods. Please note that if you live offshore these dates do not apply as it will take us slightly longer to get the goods to you and we will contact you directly.

Please note that it is an all-day delivery service which is generally from 9 am – 6 pm Monday to Friday. Delivery Depots, if they have the facility, will text in advance but as the vans do multiple runs a day you might not receive a text until the afternoon if this service is available.

Due to current pallet network pressures mainly due to driver shortages we cannot guarantee delivery on your chosen day but will do our best to communicate this as soon as we are made aware by the carriers.

Two Man Delivery (£75)
For Full Details Please See Delivery Information

As the name suggests with our two-man delivery service the goods will be delivered by two men. They will carry your stove into the room of your choice (subject to any changes due to covid restrictions).

They will normally carry it up 1 flight of stairs (if it's safe to do so) but this is at their discretion so if you have a 3rd floor flat, please inform us beforehand to avoid any issues during delivery.

The two-man delivery normally takes 5-10 working days to be delivered once we receive the stock into our own warehouse, but this timescale can be dependent on where you live. We expect the lead time to extend during busier periods/later months of the year. Once the goods come into stock you will be contacted, and delivery arranged.

Please contact us directly if you wish to take advantage of our 2-man service.


User Manuals and Guides

(Size: 144.6 KB)
Flue & Ducting Warranty sheet for Chimney Liner. Please read carefully if you have ordered a liner kit with your stove. Contains important information.

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