Wood fireplaces s[21]sf
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s[21] A perfect pairing of architecture and fire

Stûv 21 wood fireplaces are manufactured to blend into the decor, the fire becomes the center of attraction. These modern fireplace models also feature a retractable window that can be raised or lowered for an open or closed fire.

Frameless guillotine glass window

Stûv 21 wood fireplace models have a guillotine glass window. There is no frame at the bottom to affect the view of the fire.

Single or double-sided

Stûv 21 wood fireplaces come in many sizes and are available in single or double-sided format to allow for multiple architectural integrations.

A maximum view of the fire

Only a delicate steel frame delimits the combustion chamber of Stûv 21 wood fireplaces, providing a wider view of the fire.

New guillotine fire screen

Optional, the guillotine spark guard combines elegance and safety for an enhanced fireplace experience. Made from stainless steel, it provides solid protection against sparks while its fine mesh offers an unobstructed view of the flames.

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s[21]sf 125
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Technical documents s21, a large family in every size

The various models of Stûv 21 wood fireplaces with zero clearance are available in single and double-sided versions. For more information, download the technical data sheets and installation instructions.

Simple face (21) 04
Double face 03

Model

s[21]sf 85
s[21]sf 95
s[21]sf 105
s[21]sf 125
Nominal heat output
Find out more

These nominal heat outputs were obtained according to a European testing protocol.

For additional information on powers, please see: https://stuvamerica.com/en/inspirations/tips-and-techniques/power-btu/

44 000 BTU/h

43 000 BTU/h

65 000 BTU/h

60 000 BTU/h

Heating surface area
Find out more

The heating surface area indicates the number of square feet that a unit can heat. However, the height of the ceilings, the number of storeys, the shape and quality of the insulation in a house can have an impact on the heating area indicated for each model.

1 400 ft2

1 600 ft2

1 400 ft2

1 800 pi2

Combustion chamber
Find out more

This technical feature is used as a comparison to illustrate the loading capacity of a model. All Stûvs models offer full use of the combustion chamber and have been designed to accommodate standard 16″ logs and more.

4.8 ft3

6.6 ft3

5.3 ft3

8.4 ft3

Weight
Find out more

The weight of an appliance is something you should consider for your project since you may need to have a professional confirm that the structure is strong enough to support the chosen model.

665 lb

820 lb

688 lb

892 lb

Certifications
Find out more

Certifications

UL
ULC

UL
ULC

UL
ULC

UL
ULC

Model

s[21]df 85
s[21]df 95
s[21]df 125
Nominal heat output
Find out more

These nominal heat outputs were obtained according to a European testing protocol.

For additional information on powers, please see: https://stuvamerica.com/en/inspirations/tips-and-techniques/power-btu/

48 000 BTU/h

50 000 BTU/h

61 000 BTU/h

Heating surface area
Find out more

The heating surface area indicates the number of square feet that a unit can heat. However, the height of the ceilings, the number of storeys, the shape and quality of the insulation in a house can have an impact on the heating area indicated for each model.

1 400 ft2

1 600 ft2

1 800 ft2

Combustion chamber
Find out more

This technical feature is used as a comparison to illustrate the loading capacity of a model. All Stûvs models offer full use of the combustion chamber and have been designed to accommodate standard 16″ logs and more.

6.5 ft3

8.4 ft3

10.6 pi3

Weight
Find out more

The weight of an appliance is something you should consider for your project since you may need to have a professional confirm that the structure is strong enough to support the chosen model.

752 lb

855 lb

960 lb

Certifications
Find out more

Certifications

UL
ULC

UL
ULC

UL
ULC

Technical documents

Customisation & colors Overview of frames and front panels for s21

The many frames and front panels of Stûv 21 wood fireplaces have been specially designed to hide the finishing materials, offer a minimalist design and add an original touch to any decor.

Front panel SF4

Front panel SF4

A 9 1/2″ steel frame to highlight the integration of your wood fireplace in your home. Available in various shades. For Stûv 21-85, 21-95, 21-105 and 21-125 models.

Front panel SF5

Front panel SF5

This steel front is a contemporary version of traditional fireplace mantels. A finishing option to add a unique touch to your decor. Available in a variety of colours, the SF5 has an integrated convection system. For Stûv 21-85, 21-95, 21-105 and 21-125 models.

Front panel SF6

Front panel SF6

This steel front panel adds a unique and contemporary touch to your decor. Available in a variety of colours, the SF6 has an integrated convection system. For Stûv 21-85, 21-95, 21-105 and 21-125 models.

Front panel SF8

Front panel SF8

This steel front panel adds a unique and contemporary touch to your decor. Available in StûvGrey only. For Stûv 21-105 model.

Stûv 21 picture type frame

Stûv 21 picture type frame

This 2 3/8″ steel frame is equipped with an adjustable counter-frame (2 to 3″) allowing different depths to hide finishing materials. Available in StûvGrey colour only. For Stûv 21-85, 21-95, 21-105 and 21-125 models.

Stûv 21 thin edge frame

Stûv 21 thin edge frame

For a sleek design, this StûvGrey-coloured steel frame offers two depths (3″ or 4″) to hide the finishing materials. For Stûv 21-85, 21-95, 21-105 and 21-125 models.

Several colours available

The variety of shades available have been carefully selected. Simple and elegant, these colours are timeless classics. StûvGrey – the iconic colour of Stûv units – is a distinctive shade specially created for the brand. *Please note colors presented here are for informative purposes only.

White RAL 9010

White RAL 9010

Grey RAL 9007

Grey RAL 9007

StûvGrey

StûvGrey

StûvBlack

StûvBlack

Rust finish

Rust finish

Rust finish

Rust finish

A unique process obtained by natural oxidation of the metal in a controlled environment. The process is stopped once a nice rusty finish is reached. This means every piece is unique.

Finishings Customize your s[21]

Linear finishing grilles

Linear finishing grilles

The required convection system with the installation of a Stûv 21 offers different finishing options. The linear grille allows a minimalist design when the integration has to be done on the front. This option is composed of a linear grille for the hot air outlet (placed above the unit) and 2 linear grilles for the cold air inlet (placed below the unit) in StûvGrey colour.

Standard finishing grilles

Standard finishing grilles

The required convection system with the installation of a Stûv 21 offers different finishing options. The standard finishing grilles allow several types of integration and therefore offer multiple installation possibilities. This option includes 4 white rectangular grilles – 2 for the cold air inlet (placed below the unit) and 2 others for the hot air outlet (placed above the unit).

Guillotine fire screen

Guillotine fire screen

The guillotine fire screen is the essential accessory for enhancing the wood fire experience at home in complete safety. Its stainless steel structure makes it sturdy, while its fine mesh lets you fully enjoy the view of the flames. With no visible mechanism or finishing material, the fire screen forms an integral part of the fireplace. Equipped with handles on each side, it easily lowers and raises with a simple motion. Available as an option, it can be added to your s21 later, regardless of the finish around your fireplace. 

Mobile log rack

Mobile log rack

The mobile log rack, available in two sizes, is the ideal solution for storing wood. It moves easily thanks to its silicone wheels.

Mobilobox

Mobilobox

This small mobile box is not only easy to handle, but it also has an integrated storage for firewood, matches and fire starters.

Additional accessories for installation Complete your s[21]

Adjustable legs

Adjustable legs

These adjustable steel legs are perfect for quickly adjusting the desired height of your wood fireplace. They can be easily and quickly installed on all Stûv 21 models. Maximum height: 24 in.
Airtight Box

Airtight Box

This steel box allows the outside air intake from outside the house to be connected directly to the combustion chamber of the wood fireplace.
Air damper

Air damper

This damper prevents outside air from coming into the house when the unit is not in use. This accessory is strongly recommended for very airtight home standards. Available in 4 or 6 in.
Connection kit for outside air intake

Connection kit for outside air intake

This kit connects the outside air intake to the appropriate connector for each unit. It includes a 4" diameter, 12' long insulated duct and a white grill.
StûvGrey Paint

StûvGrey Paint

400 ml StûvGrey spray paint ideal for covering scratches and doing touch-ups or painting the flue pipe the same colour as the unit.

Innovative features ensure optimal operation of a s21

Convection system and insulated shell

The Stûv 21 convection system consists of two room air inlets and two hot air outlets. It serving two purposes: to temper the combustion chamber of the fireplace and to release heat into the room to warm the house. A shell made of steel and insulating wool allows secure installation of the Stûv 21 into combustible materials.

Convection system and insulated shell

Tilting door

Once the window has been fully lowered, the door can be tilted forward to facilitate cleaning of the glass and to ensure future maintenance of the seals and other components of the Stûv 21.

Tilting door

Invisible slides

The slides for raising or lowering the Stûv 21 glass are placed in the door frame to facilitate access during maintenance. Their impeccable finish means that they are not visible once the wood fireplace door is raised.

Invisible slides

Accessible pulley system

The cables and pulleys of the Stûv 21, although hidden, have been designed to be accessible at all times to facilitate future maintenance without having to remove the perimeter and finish.

Accessible pulley system

Large combustion chamber

The combustion chamber of the Stûv 21 is shallow, so that it is used to the maximum of its capacity. You get a guaranteed result : a spectacular fire.

Large combustion chamber

The Stûv 21 convection system consists of two room air inlets and two hot air outlets. It serving two purposes: to temper the combustion chamber of the fireplace and to release heat into the room to warm the house. A shell made of steel and insulating wool allows secure installation of the Stûv 21 into combustible materials.

Convection system and insulated shell

Once the window has been fully lowered, the door can be tilted forward to facilitate cleaning of the glass and to ensure future maintenance of the seals and other components of the Stûv 21.

Tilting door

The slides for raising or lowering the Stûv 21 glass are placed in the door frame to facilitate access during maintenance. Their impeccable finish means that they are not visible once the wood fireplace door is raised.

Invisible slides

The cables and pulleys of the Stûv 21, although hidden, have been designed to be accessible at all times to facilitate future maintenance without having to remove the perimeter and finish.

Accessible pulley system

The combustion chamber of the Stûv 21 is shallow, so that it is used to the maximum of its capacity. You get a guaranteed result : a spectacular fire.

Large combustion chamber

When performance enhances the fire

When performance enhances the fire

When performance enhances the fire

  • 1

    The air required for combustion comes directly from under the unit through an airtight box specially designed for the Stûv 21 models.

  • 2

    A deviator placed at the top of the combustion chamber constrains the smoke in order to moderate the fire and provide better combustion.

  • 3

    Once the gases have burned they are evacuated through the flue pipe.

  • 4

    The sweeping air flow removes dust due to combustion from the glass providing a perfect view of the flames.

  • 5

    The air is taken from the room (via two air inlets located at the bottom of the unit) the convection air circulates along the combustion chamber to absorb the heat.

  • 6

    The heated air comes out naturally from the top of the unit (via two hot air outlets intended for this purpose) and distributes a comforting warmth into the room.

Before the s21

Before the s21

Before the s21

« The Stûv 20, launched in the early 1990s, was Stûv's first real commercial success. In developing Stûv 21, I wanted to consolidate our lead with other innovations such as a retractable tilting overhead door, a fully or partially retractable door and whose lower part would be frameless. Stûv 21's were also the first wood fireplaces on which it was possible to graft transport handles, for the comfort of the installers."

- Gérard Pitance - Designer & Founder

Ready to buy?

1

Download the Stûv 21 product sheet

A summary of the main characteristics and technical data of these models

See PDF
2

Getting ready to go in-store

Here is a list of relevant information to know and useful documents to have before you go to a dealer

See PDF
3

Find your Stûv at your dealer

Locate the available Stûv units closest to you.

See
1

Download the Stûv 21 product sheet

A summary of the main characteristics and technical data of these models

See PDF
2

Getting ready to go in-store

Here is a list of relevant information to know and useful documents to have before you go to a dealer

See PDF
3

Find your Stûv at your dealer

Locate the available Stûv units closest to you.

See

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