Narvi Kota Basic Flue 15 (black light, 255/120 × 1500, straight rubber flange) is Narvi’s complete steel flue kit for wood-burning sauna stoves. We do not list Narvi stoves in this shop yet. This flue still belongs on a Narvi / Kota 125 mm stove you already own. CE T600 on Narvi’s Kota 15 manual — still not a UL 6-inch Class A kit.
How it is used
Insulated 1500 mm main plus a 1000 mm non-insulated start pipe. Narvi: inner flue 125 mm, outer casing 255 mm, black painted shell, damper built into the kit. Fits stoves with about 119 mm smoke outlet (start pipe 120/122 mm). Harvia/HUUM 115 mm outlets need Narvi’s 115/120 adapter (6015-111) — that adapter is not this SKU and is not a US 6-inch Class A pipe. 300 mm insulated extensions are sold separately (304-128648).
What’s included
- Kota 15 main kit with straight rubber flange (304-128645)
- Narvi.com packing for the current Narvi Sauna Chimney / Kota 15 family: insulated damper section + 300 mm flue section (inner 125 mm); 1000 mm non-insulated connection pipe (120/122 mm); fastening ring; 0–22° feedthrough flange; vapour barrier flange + tape; feedthrough insulation; 400 mm feedthrough cover; carrier ring; base support; roof rubber seal; rain cover
- Confirm today’s carton with our team — Narvi’s live page is the current kit, catalog title adds “straight rubber flange”
Specs
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Brand: Narvi (Finland)
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Model: Kota Basic Flue 15 / Narvi Sauna Chimney
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Finish: Black (heat-resistant painted zinc-coated outer casing)
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Inner pipe: 125 mm stainless
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Outer casing: 255 mm
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Insulated length in kit: 1500 mm class; Narvi: max assembled kit without extra extensions about 2500 mm
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Uninsulated start pipe: 1000 mm, 120/122 mm
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Damper: Included in the Kota 15 kit (Narvi)
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CE class Narvi prints: T600 (EN 1856-1) — not UL
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Safety distance insulated (Narvi): 70 mm / 7 cm (40 mm in a free ventilated space per Eurofins note in the manual)
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Safety distance uninsulated connector (Narvi): 700 mm / 70 cm
Downloads
Code, UL, and who decides the flue
A licensed chimney installer and the authority having jurisdiction decide the flue for your building. We sell the manufacturer’s European steel chimney system named on this page. Narvi prints CE on the pages we cite. Those pages do not print a UL listing. We will not invent one. This is not a US 6-inch Class A kit.
Narvi Kota 15 is a CE T600 modular steel flue (EN 1856-1). Narvi does not print UL on the manual we used. Not a US 6-inch Class A kit.
Email hello@selfcaresaunas.com with roof type (flat vs pitched), ceiling height, and whether the stove loads from inside or through the wall — before you order pipe.
FAQ
Is there a Narvi stove in this shop?
We do not list Narvi stoves in this shop yet. This flue still belongs on a Narvi / Kota 125 mm stove, not with Harvia/HUUM unless the installer uses Narvi’s 115 mm adapter — and even then, local code decides.
6-inch US chimney?
No. Inner 125 mm. There is a separate Narvi adaptor for 6-inch pipe (304-128646); we do not list that as a Class A kit. email hello@selfcaresaunas.com if an installer needs it.
Water tank / thermometer?
Not in this listing. Kota chimney water tank and smoke-flue thermometer are extras, not required to complete the flue.
Questions? Email hello@selfcaresaunas.com or email hello@selfcaresaunas.com.
