An Important Note on Pricing and Returns:
We believe in upfront pricing and fair policies—no hidden fees, no surprises, and easy, transparent
returns. If you're comparing options, we encourage you to review competitors’ fine print carefully.
We've helped countless customers who had issues elsewhere, and we’re here to make sure that never
happens to you.
Official Distributor
An Important Note on Pricing and Returns:
We believe in upfront pricing and fair policies—no hidden fees, no surprises, and easy,
transparent returns. If you're comparing options, we encourage you to review
competitors’ fine print carefully.
We've helped countless customers who had issues elsewhere, and we’re here to make sure
that never happens to you.
Starts at: $248.75/mo Learn More
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Monthly payments start at: $248.75/mo Learn More
Ships in 1-5 days at most
Includes $373.99 in bonuses with your order
The Primal Reset Guide
$24.99Free
Freight Protection, Fully Covered
$349Free
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The Narvi Flue 15 (Kota Steel Flue) is a modular, CE-certified chimney flue designed for safe and
flexible installation with sauna stoves and fireplaces.
Its black stainless steel construction, heat-resistant finish, and adaptable design make it ideal for
custom setups. Compatible with standard smoke outputs (119–122 mm), it ensures fire-safe operation in
any sauna layout.
Crafted for performance and safety, the Narvi Flue 15 features a modular, heat-resistant construction. It ensures proper insulation at ceiling feedthroughs and integrates seamlessly with compatible sauna stoves.
Fire-Safe Construction:
Designed with fire safety as a priority, especially around ceiling feedthroughs and high-heat zones.
Flexible Modular Design:
Modular build supports various sauna and fireplace setups and adapts to different construction
environments.
Wide Stove Compatibility:
Fits all sauna stoves with smoke output diameters of 119mm (4.6") to 122mm (4.8").
Premium Materials:
Outer casing made from zinc-coated steel with a durable, black heat-resistant painted surface.
Removable Start Pipe:
The 100mm uninsulated stainless steel pipe can be detached for easy stove and flue maintenance.
Engineered in Finland:
Built to meet Finland’s high standards for sauna and fireplace safety and efficiency.
This flue system ensures safe, customizable chimney setups with CE-certified construction and compatibility with most sauna stove outputs.
Allows adaptable, site-specific installation in any sauna or fireplace setting.
Tested and certified for fire protection and insulation standards in European saunas.
Black painted exterior withstands continuous high heat without degrading.
Facilitates stove and chimney maintenance without requiring full disassembly.
For more than eighty years, Narvi has been dedicated to creating authentic Finnish sauna heaters, trusted by everyone from world leaders to city apartment dwellers.
As the only large-scale manufacturer with fully Finnish production and R&D, we prioritize perfect “löyly” and clean burning.
Our passionate team ensures every sauna enjoys efficient, lasting warmth with uncompromising quality and tradition.
Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
Support
Nearly impossible to reach a real person. Endless chatbot loops, auto-replies, and unreturned emails.
Real humans. We answer quickly. Always here, always helpful
Order Processing
Orders often sit for days before being acknowledged. No clear confirmation, updates, or timelines.
Orders are processed immediately. You'll receive confirmation, tracking, and real-time updates within hours.
Shipping
Slow, vague, and unoptimized. Basic carriers, minimal tracking, and delayed delivery windows.
Fast, insured, and fully trackable shipping — optimized for speed and visibility every step of the way.
Pricing
Hidden fees, bait and switch tactics, post purchase price increases.
Our relationships guarantee the lowest prices. Transparent and fair. No surprises at checkout, and no shady
tactics after the sale.
Returns & Warranty
Policies are confusing and designed to frustrate, delay, and deny returns with zero accountability.
Clear, honest, and fast. Our return policy is built to protect your investment, not dodge responsibility.
Support
Frustrating automated responses
Fast, helpful and always supportive
Order Processing
Delays and lack of communication
Instant processing and updates
Shipping
Slow, unreliable and delayed service
Fast, insured, trackable shipping
Pricing
Deceptive pricing practices
Lowest prices, no surprises
Return & Warranty
Frustrating, misleading return policies
Clear, honest return policy
Read their reviews where they can't curate them, Trustpilot, not their own widget; read the one-star reviews and watch how they respond when freight goes sideways. You can see our Trustpilot reviews here
Ask what happens when a unit arrives damaged, you're listening for a person who owns it, not store-blames-manufacturer ping-pong.
Get the delivered price in writing before payment, "freight quoted after purchase" is the oldest move in the category.
Ask for a name, if nobody owns your order, nobody owns your problem.
What comes with every order
Bonus 1
Stop guessing and start sweating with a plan. The Primal Reset Guide lays out your session times, temperatures, and weekly rhythm, plus what to expect through your first 30 sessions. Instant delivery to your inbox after purchase.
Bonus 2
Your large order ships fully insured, so you're covered from our warehouse to your door. If anything arrives damaged, Peak Primal Wellness will work with the carrier and the manufacturer to handle your claim and get a replacement moving. To keep the process smooth, inspect your delivery before signing off and document any damage right away. Most in-stock orders ship within 2-7 business days.
| Brand | Narvi |
| Model | FLUE 15 |
| SKU | 6090 |
| Material | Stainless Steel |
| Finish | Black Heat-Resistant Paint |
| Flue Diameter | 10" (25.5 cm) |
| Start Pipe Diameter | 4.7"–4.8" (12–12.2 cm) |
| Compatible Stove Flue | 119 mm (4.6") |
| Certification | CE Certified |
To request a return or refund, customers can use our contact form, email (info@peakprimalwellness.com) , or phone - (877) 689-4898. Once the product is inspected and confirmed to be in brand new condition, we will initiate the refund, which typically takes 5-7 business days to post back to the original payment method. Refunds can be applied via the customer’s preferred method, including card or bank transfer. Shipping instructions and the return address will be provided upon contacting customer service. Please include photos if the product arrives damaged. Click here to view our complete return policy for more details.
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
It’s a modular flue system designed to safely vent sauna stoves and fireplaces, ensuring insulation and proper chimney function.
It fits sauna stoves with flue output diameters between 119mm and 122mm, covering most standard sauna stove models.
Yes, it carries CE certification, which means it meets European safety standards for chimney and flue installations.
The start pipe is stainless steel, while the outer casing is zinc-coated steel with a black, heat-resistant finish.
Yes. The stainless steel start pipe is designed to be removable for easier stove and flue maintenance or replacement.
Yes, the flue features a black, heat-resistant paint finish that protects it from high temperatures and corrosion.
Like all Narvi products, the flue is designed and engineered in Finland to uphold rigorous safety and sauna performance standards.
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