Stûv 21.2 Fireplace

A premium wood fireplace lineup built for clean design, wide fire views, and serious flexibility – the Stûv 21 series is designed for homeowners who want a modern wood fireplace that feels architectural, refined, and highly intentional. Across the lineup, Stûv 21 fireplaces feature a retractable glass door for open or closed fire operation, a shallow firebox for a broader flame presentation, and a built-in convection system that helps move heat into the room.
Built to blend fire and architecture together – the Stûv 21 is less about looking like a traditional fireplace and more about becoming part of the room itself. Only a fine steel frame outlines the fire, while the retractable glass, hidden slides, and accessible pulley system help keep the look clean without making future maintenance a nightmare. Stûv also uses an insulated shell and standard convection system across the range to support secure installation and practical heat delivery.
A major advantage of the lineup is choice without losing consistency – whether the project calls for a smaller single-face fireplace, a wide linear-style opening, or a see-through double-face feature between two rooms, the Stûv 21 family keeps the same core design language throughout. That makes it a strong option for builders, designers, and homeowners who want a premium wood fireplace with multiple size and layout options, but one cohesive modern aesthetic.

Starting at $12,577.00

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The Stûv 21 lineup is built for homeowners who care just as much about how a fireplace fits the room as how it burns. This is a design-first wood fireplace family — one that delivers the atmosphere of a real wood fire, but in a cleaner, more integrated format than many traditional wood fireplaces. The visual focus stays on the flames, not on heavy trim, bulky surrounds, or fussy detailing.

What makes the Stûv 21 series stand out is the combination of modern presentation and real wood-fire performance. The firebox is intentionally shallow so it uses the full combustion chamber efficiently and creates a broader, more dramatic fire view. At the same time, the retractable glass door gives homeowners the ability to enjoy an open fire when the mood calls for it, or run it closed when they want a more controlled burn and practical heat.

Another big strength is how flexible the lineup is across different projects. The single-face lineup covers four sizes — 21-85, 21-95, 21-105, and 21-125 — while the double-face models are offered in 21-85 DF, 21-95 DF, and 21-125 DF. That gives this family a lot of range, from more compact statement fireplaces to larger feature units and see-through room-divider designs. In plain English: same design DNA, different levels of drama.

For customers who want a premium wood fireplace that feels modern, minimal, and thoroughly thought through, the Stûv 21 lineup lands in a very strong position. It gives you real flame, real wood heat, and a much more architectural end result than a lot of traditional fireplace options.

Technical Specifications

Firebox Style: Contemporary wood fireplace with retractable glass door; available in single-face and double-faceformats.

Available Sizes:
Single-Face: 21-85, 21-95, 21-105, 21-125.
Double-Face: 21-85 DF, 21-95 DF, 21-125 DF.

Maximum Log Length:
21-85: 24″
21-95: 28″
21-105: 32″
21-125: 40″
21-85 DF: 24″
21-95 DF: 28″
21-125 DF: 40″

Nominal Heat Output:
21-85: 44,000 BTU/h
21-95: 43,000 BTU/h
21-105: 65,000 BTU/h
21-125: 60,000 BTU/h
21-85 DF: 48,000 BTU/h
21-95 DF: 50,000 BTU/h
21-125 DF: 61,000 BTU/h

Heating Area:
21-85: up to 1,400 sq. ft.
21-95: up to 1,600 sq. ft.
21-105: up to 1,400 sq. ft.
21-125: up to 1,800 sq. ft.
21-85 DF: up to 1,400 sq. ft.
21-95 DF: up to 1,600 sq. ft.
21-125 DF: up to 1,800 sq. ft.

Glass Size:
21-85: 26 1/2″ W x 21 1/16″ H
21-95: 30 3/8″ W x 24 1/4″ H
21-105: 34 1/4″ W x 15 3/4″ H
21-125: 42 1/8″ W x 21 1/16″ H
21-85 DF: 26 1/2″ W x 21 1/16″ H
21-95 DF: 30 3/8″ W x 24 1/4″ H
21-125 DF: 42 1/8″ W x 21 1/16″ H

Convection System: Standard across the lineup.

Outside Air:
Single-Face: 4–6″ outside air duct depending on model.
Double-Face: 6″ outside air duct.

Chimney Diameter:
Single-Face: 8″ on 21-85 and 21-105; 10″ on 21-95 and 21-125.
Double-Face: 10″ – 12″ depending on model