The Finnmark FD-3 Full Spectrum Infrared Sauna is a 4-person full-spectrum infrared sauna measuring 72" (182.8 cm) wide × 46" (116.8 cm) deep × 78" (198.1 cm) high, running on a 240V 15A supply. It reaches 170° F on infrared.
Create a daily wellness retreat in the comfort of your own home. Finnmark Designs is the only infrared sauna manufacturer that combine long-wave carbon 360 infrared panels with UL listed short-wave Spectrum Plus infrared panels. This combination provides higher temperatures, full body coverage, deeper penetration, and an experience better than any other sauna. Each heater is strategically placed to offer the highest level of therapy possible. Achieve temperatures of 170° in less than 1 hour, an engineering marvel!
- Antimicrobial Western Canadian cedar interior that protects against mold, bacteria and fungus.
- Thermal Plus Aspen exterior that will never rot, warp, decay or chip. Making Finnmark Designs full spectrum infrared saunas one of the healthiest and longest lasting saunas on the market.
- Built-in LCD touchscreen controller with Bluetooth audio.
- Audio with 6" HiFi speakers, 8mm tempered glass for the ultimate thermal retention.
- Removable and adjustable sauna feet for uneven surfaces.
Cabin
Bottom Panel, Top Panel, Back Panel, Front Panel, Left Panel, Right Panel, Glass Door, Bench Support, Bench Top, Door Handle (2 Screws), Controller 2.0, built-in LCD touchscreen control panel with Bluetooth audio, Audio upgrade with 6" HiFi speakers, 8mm tempered glass for the ultimate thermal retention
Heating & Controls
Heater Cable, Floor Cable, Power Supply Unit, Power Cable, Interior Heater Connections with Wood Cover, Infrared Sauna Heater Panels, Spectrum LED near infrared ceiling lights combined with medical grade Spectrum Red Light therapy, Controller 2.0, built-in LCD touchscreen control panel with Bluetooth audio, Audio upgrade with 6" HiFi speakers, 8mm tempered glass for the ultimate thermal retention
Also in the Box
Screws, Removable and adjustable sauna feet for uneven surfaces
These are not included. You need them before the sauna will run.
Electrical
A dedicated 240V circuit rated at least 15 A.
Assembly Space
The panels clip together without tools beyond the supplied screws, but you need clear access on every side while you build it.
| Finnmark Part Number |
FD-KN003 |
| Capacity |
4 person |
| Infrared Output |
3150 W (3.1KW) |
| Maximum Temperature |
170° F |
| Room Volume |
111.3 (ft³) |
| Exterior Materials |
Canadian Aspen |
| Interior Materials |
Western Red Cedar |
| Material |
Wood |
| Glass |
Tempered 8mm (0.8 cm) |
| Door Size |
67.875" x 23.625" (172.40 cm x 60 cm) |
| Dimensions |
72" (182.8 cm) × 46" (116.8 cm) × 78" (198.1 cm) |
| Weight |
488 lbs (221.35 kg) |
| Shipping Weight |
536 lbs (243.12 kg) |
| Panel Mounting |
Wall |
| Certification |
ETL certified |
| Ships |
LTL freight, curbside |
| Prop 65 |
NO |
Finnmark states the cabin is ETL certified and that the short-wave Spectrum Plus infrared panels are UL listed. Ask us for the certificates if your inspector or insurer wants to see them.
CircuitInfrared
Output3150 W
Voltage240V
PhaseSingle
Rated Amps15 A
Dedicated Circuit
240V, hardwired or on its own dedicated outlet. Have a licensed electrician confirm the supply before delivery.
Who Installs It
A licensed electrician, working to the installation manual and your local electrical code.
The FD-3 Full Spectrum Infrared Sauna seats 4. Interior 67" (170.1 cm) × 41" (104.1 cm) × 70" (177.8 cm); exterior 72" (182.8 cm) × 46" (116.8 cm) × 78" (198.1 cm).
Measure the exterior against your space, and the door against the route you will carry the panels through. The cabin arrives flat as panels, so the constraint is usually the doorway rather than the room.
Seats
4 person
Interior
67" (170.1 cm) × 41" (104.1 cm) × 70" (177.8 cm)
Exterior
72" (182.8 cm) × 46" (116.8 cm) × 78" (198.1 cm)
Door Opening
67.875" x 23.625" (172.40 cm x 60 cm)
| Model |
Seats |
Footprint |
Volume |
Heat |
| FD-1 |
1 person |
38" (96.5 cm) × 38" (96.5 cm) |
44.1 (ft³) |
Infrared only |
| FD-2 |
2 person |
44" (111.7 cm) × 48" (121.9 cm) |
70 (ft³) |
Infrared only |
| FD-4 |
2 person |
48" (121.9 cm) × 48" (121.9 cm) |
86 (ft³) |
Infrared + traditional |
| FD-3 |
4 person |
72" (182.8 cm) × 46" (116.8 cm) |
111.3 (ft³) |
Infrared only |
| FD-5 |
4 person |
48" (121.9 cm) × 72" (182.8 cm) |
130 (ft³) |
Infrared + traditional |
What Finnmark publishes about infrared heat. These are the manufacturer's claims, not medical advice.
- The natural heat produced by the Spectrum Plus heaters is designed to achieve a more controlled hot climate much like a traditional sauna without the unbearable heat temperatures. This deeper penetration through sweating goes beyond the muscle and fat rather than a traditional or hot air sauna. As a result, you're able to work up the best possible sweat in the least amount of time.
- Full Spectrum Sauna combination of long-wave Spectrum Carbon 360 infrared panels with UL-listed short-wave Spectrum Plus infrared panels. This combination provides higher temperatures, full body coverage, deeper penetration, and better experience than any other sauna.
- Reap the benefits of a more natural pain relief remedy with every infrared sauna session.
- Athletes can appreciate a faster muscle recovery with increased blood flow to the muscles, delivering more concentrated oxygen and creating more energy to heal.
Finnmark makes these to fit the FD-3. All sold separately.
Sauna Cover
Finnmark FD3 Sauna Cover
Sauna Cushion
Finnmark 3-Person Sauna Cushion
What electrical supply does the FD-3 need?
A dedicated 240V circuit rated at least 15 A for the infrared side.
How hot does the FD-3 get?
170° F. Finnmark states it reaches that in under an hour on a standard outlet. Infrared warms the body directly rather than heating the air, so it works at a lower air temperature than a traditional sauna.
Will the FD-3 fit through my doorway?
It ships flat as panels rather than assembled, so the doorway is rarely the problem — the largest single panel is what matters, not the 72" (182.8 cm) × 46" (116.8 cm) assembled footprint. Measure your space against the exterior dimensions above.
Finnmark
