Harvia Legend 300 Duo fireplace heater, 15–30 m³

Product code: HARWK300LDLUX

GTIN Code: 6417659012409

The Harvia Legend 300 Duo is a truly impressive tunnel heater, handcrafted for a premium sauna experience. This fireplace heater offers double the opportunity to enjoy the ambiance and warmth of a live fire. The black steel frame holds a large quantity of sauna stones, ensuring unique and satisfying steam. The Harvia Legend 300 Duo wood-burning stove is installed inside the sauna, while the firebox door extends through the wall into another room—allowing it to function as a fireplace, for example in a living room. It is compatible with the stylish Harvia Duo glass wall for a beautiful installation result.

Product details:

• Brand: Harvia
• Model: Duo, Legend
• Warranty: 2 years (covers material and manufacturing defects)

Product dimensions:

• Height (mm): 1040
• Diameter (mm): 600
• Flue outlet diameter (mm): 115
• Weight (kg): 99

Product features:

• Color: Black
• Material: Steel
• Stove type: Through-wall fireplace heater, Large sauna stove, Cage-style heater
• Water tank: Not included
• Adjustable legs: 0–3 cm
• Depth + firebox extension: 66 + 12 cm
• Handcrafted by Harvia’s skilled blacksmith
• Cast iron glass door, hinge side reversible
• Recommended stone size: Ø 10–15 cm
• Firebox cover thickness: 6 mm
• Max log length: 47 cm
• Log diameter: 8–15 cm
• Nominal power: 23.5 kW
• Required chimney temperature class: T600
• Flue opening position (rear, floor to center): 690 mm
• Flue opening position (top, rear edge to center): 210 ± 5 mm
• Masonry wall installation (E): Leave a 50 mm air gap between the stove and walls. If installed in a wall recess, leave 100 mm.
• Minimum safety distances must be followed—see installation manual for details.

Available accessories:

• Harvia Duo glass walls
• Protective railing SASPO240
• Protective wall WL200
• Protective base WL110
• Chimney pipe guard WL300
• Harvia Legend water heater
• Harvia Legend sauna accessories

Note: Stones are not included in standard delivery (available separately)

Installation into concrete or brick wall opening:

• Minimum opening width: 405 mm
• Minimum opening height (from floor): 485 mm
• Maximum wall thickness: 120 mm
• For detailed instructions, refer to the stove’s user manual
• For glass wall installation, follow the glass wall’s dedicated manual

Technical specifications:

• Max stone capacity (kg): 260

Installation and use:

• Minimum sauna volume (m³): 15
• Maximum sauna volume (m³): 30
• Safety distance to ceiling (mm): 1000
• Safety distance to side (mm): 200
• Safety distance to front (mm): 700
• Safety distance to rear (mm): 250
• Flue connection location: Top, Rear

Package dimensions and weight:

• Package width (mm): 810
• Package height (mm): 1060
• Package depth (mm): 620
• Shipping weight (kg): 101.3

Installation instructions