Finnmark FD-3 Full Spectrum Infrared Sauna
The Finnmark FD-3 is a 3-person full spectrum infrared sauna engineered to deliver clinical-grade heat therapy in a premium-built cabin sized for a real wellness routine. With combined near, mid, and far infrared heating panels, low-EMF technology, and a Wi-Fi-enabled controller, the FD-3 brings the most advanced category of infrared sauna into a footprint where 3 people can sit comfortably without crowding.
Full spectrum heat therapy in one cabin
Most infrared saunas use only far infrared. The FD-3 goes further, combining near, mid, and far infrared in a single integrated system. Each wavelength reaches a different depth in the body and serves a different therapeutic purpose, giving you the broadest range of benefits in a single session: skin and surface healing from near infrared, muscle and joint penetration from mid, and deep tissue heat from far infrared.
Premium thermal wood construction
The cabin is built from premium thermal wood, a heat-treated softwood that resists moisture, won't warp under repeated heat cycles, and develops a beautiful character over years of use. Thermal modification also eliminates resin from the wood, so the interior stays clean and inert at peak temperature. Every panel, joint, and finish is engineered for daily home use.
Smart, simple, certified
An integrated V2 Wi-Fi controller lets you start your sauna from your phone, schedule sessions, and adjust temperature without leaving your seat. The FD-3 cabin and components are UL listed, ETL certified, and EMF tested by a third-party lab, you can review the test logs and certifications in the documents below.
A clinical-grade 3-person full spectrum infrared sauna combining near, mid, and far infrared with low-EMF technology, premium thermal wood construction, and Wi-Fi smart controls. Ships with full UL/ETL certification and third-party EMF test logs included.
3-person infrared sauna Full spectrum (near, mid, far) Low-EMF technology Premium thermal wood V2 Wi-Fi controller UL listed & ETL certified Bluetooth audio Authorized Finnmark dealer
Specifications
Dimensions & capacity
| External dimensions |
57.5" W × 47.2" D × 75" H |
| Internal dimensions |
54.7" W × 44.5" D × 71.7" H |
| Capacity |
3 persons |
| Sauna type |
Full spectrum infrared (near, mid, far) |
Construction & materials
| Cabin material |
Premium thermal wood |
| Glass |
Tempered safety glass door |
| Floor |
Reversible thermal wood floor |
| Roof |
Solid panel construction |
Heaters & performance
| Infrared type |
Full spectrum (near, mid, far) |
| Number of heaters |
9 panels (full coverage) |
| Max temperature |
170°F (77°C) |
| EMF rating |
Low-EMF (third-party tested) |
Electrical & controls
| Voltage |
240V / 20A dedicated circuit |
| Power source |
Hardwired or NEMA 6-20 outlet |
| Controller |
V2 Wi-Fi enabled |
| App control |
Yes (iOS & Android) |
| Audio |
Built-in Bluetooth speakers |
| Lighting |
Interior LED lighting |
Certifications
| UL Listing |
Yes (UBJY2.E65554, sheathed heating elements) |
| ETL Certification |
Yes (Intertek infrared sauna safety) |
| EMF Test Log |
Available (PR108242) |
| Finnmark Certification |
Available |
What's included
FD-3 cabin (premium thermal wood)
6 full spectrum infrared heater panels
Tempered glass door with handle
V2 Wi-Fi-enabled control system
Interior bench seating
Reversible thermal wood floor
Built-in Bluetooth speakers
Interior LED lighting
Power supply & wiring kit (240V)
Installation hardware
Installation & operation manual
Wi-Fi controller manual
Why the Finnmark FD-3 stands out
Full spectrum infrared
Near, mid, and far infrared in one integrated system. Each wavelength reaches a different depth, giving you the broadest range of benefits in a single session.
Low-EMF technology
Heaters and controllers engineered to minimize electromagnetic field exposure. Third-party EMF test logs available, full transparency on the readings.
3-person room to spread out
Larger cabin than entry-level infrared saunas, with comfortable bench depth for 3 adults. Use solo for focused sessions or share with family without crowding.
Premium thermal wood
Heat-treated wood that resists moisture and won't warp. Thermal modification eliminates resin, keeping the interior clean and inert at peak heat.
V2 Wi-Fi smart controller
Start your sauna from your phone, schedule sessions, monitor temperature, and adjust settings without leaving the bench. Works with iOS and Android.
UL listed & ETL certified
Independent third-party safety certification on heating elements (UL) and the complete sauna system (ETL). Documentation available for every unit.
About Finnmark Designs
Clinical-grade home wellness
Three-person full spectrum infrared, clinical grade
Finnmark Designs builds infrared saunas for people who take wellness seriously. The FD-3 sits in the middle of the Finnmark range, larger than the FD-2 and the FD-4, offering a true 3-person cabin without stepping up to the XL Trinity. The brand specializes in full spectrum infrared technology, combining near, mid, and far infrared into integrated systems with low-EMF performance and premium materials. Every cabin is engineered, tested, and certified to meet the standards used in clinical and commercial wellness settings.
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Full spectrum infrared, near, mid, and far in one cabin
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Low-EMF technology, third-party tested, full transparency
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Premium thermal wood, moisture-resistant, resin-free
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UL listed & ETL certified, independent safety verification
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Wi-Fi smart controller, modern controls, app-enabled
About Finnmark Designs
Built for the home, engineered for performance
Finnmark designs every product around three priorities: heat that actually works at therapeutic levels, materials that last decades of daily use, and certifications that prove what's claimed. The FD-3 delivers all three in a properly sized 3-person cabin, full spectrum infrared performance with the room and comfort that compact saunas can't offer.
From the V2 Wi-Fi controller to the third-party-tested low-EMF heaters and the published EMF test logs, Finnmark stands behind every detail with documentation. It's the rare wellness product that gives you the data, not just the marketing.
Manuals & Documents
Everything you need before and after installation
Download all the official Finnmark Designs documentation below, installation manuals, the V2 Wi-Fi controller guide, EMF test logs, UL listing, ETL certificate, and the warranty document. Reviewing the IOM (Installation & Operation Manual) before delivery is recommended so you know what to expect on installation day.
Installation & Operation Manuals
Test Logs & Certifications
Warranty
Warranty
Finnmark Designs Limited Lifetime Warranty
Every Finnmark FD-3 is backed by Finnmark's limited lifetime warranty on the cabin's structural integrity for residential use. Heaters, electrical components, and electronics (including the V2 Wi-Fi controller) are covered under their respective manufacturer warranty terms. All warranty claims go directly through Finnmark Designs with full factory support, and we are an authorized Finnmark Designs dealer. See the official warranty document above for full terms, exclusions, and claim procedures.