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Low Profile (Medium) vs Stony 20

Kuuma Low Profile (Medium) and Narvi Stony 20, compared on the figures their makers publish. These wood-burning stoves carry maker room-size ratings that share part of the same range.

The makers' figures side by side

The makers' figures side by side
SpecificationKuuma Low Profile (Medium)Narvi Stony 20
Room size it is rated for448–700 ft³ (about 12.7–19.8 m³, our conversion)8–20 m³ (about 283–706 ft³, our conversion)
FuelWood-burningWood-burning
Stone capacity250-350 lb210 kg
DimensionsH 26 in x W 27 inH 81 cm x W 52 cm x D 55 cm
Weight325 lb70 kg
Water tank—Chimney water tank accessory (22 l / 30 l)
Flue / chimney diameter6 in119 mm
Warranty—2 years (private use); 1 year (non-private use)
Price on the maker's site$3,045 (lamppakuuma.com, 23 Sep 2026)—

Each figure is the maker's own, as cited row by row on the Low Profile (Medium) and Stony 20 pages and listed in the sources below. A dash means the figure is not on the maker pages we cite. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.

Where to buy

Where the published figures differ

  • Room size it is rated for: Low Profile (Medium): 448–700 ft³ (about 12.7–19.8 m³, our conversion). Stony 20: 8–20 m³ (about 283–706 ft³, our conversion).
  • Stone capacity: Low Profile (Medium): 250-350 lb. Stony 20: 210 kg.
  • Dimensions: Low Profile (Medium): H 26 in x W 27 in. Stony 20: H 81 cm x W 52 cm x D 55 cm.
  • Weight: Low Profile (Medium): 325 lb. Stony 20: 70 kg.
  • Flue / chimney diameter: Low Profile (Medium): 6 in. Stony 20: 119 mm.

Figures we cite for only one of the two: water tank (only Narvi's cited pages give it); warranty (only Narvi's cited pages give it); price on the maker's site (only Kuuma's cited pages give it). Ask the other maker before treating the two as equal on those points.

Read each one in full

Narvi Stony 20

Narvi · wood-burning · rated for 8–20 m³ (about 283–706 ft³, our conversion)

Sources

  1. Low Profile Fantastic Finnish Wood Burning Sauna Stove — Kuuma
  2. Narvi Stony 20 - Narvi Oy — Narvi
  3. Limited Warranty - Narvi Oy — Narvi