Finnmark FD-3 Full Spectrum Infrared Sauna | 4-Person Indoor Cedar Sauna

3–4 Person Indoor Cedar Sauna | Carbon + Spectrum™ Heating | 240V | ETL Certified

The Finnmark FD-3 brings a premium infrared sauna experience into the home with a spacious cabin designed for 3–4 people. Crafted with a Canadian Grade “A” Clear Western Cedar interior and a durable Thermal Plus™ European Aspen exterior, the FD-3 is built for customers who want a larger indoor sauna with full-spectrum infrared heat, integrated controls, Bluetooth audio, and ETL safety certification.

The FD-3 features Carbon + Spectrum™ full-spectrum infrared heating — combining Spectrum Plus™ mid and far infrared heaters with Carbon 360° flat panel heaters for full-cabin infrared coverage. Reach up to 170°F in less than one hour on a standard 240V outlet. No stones, no water, no plumbing required.

Who This Is For

• Indoor residential sauna installation
• Families or households of 3–4 people
• Buyers who want full-spectrum infrared heat without stones or water
• Home gyms, wellness rooms, and dedicated relaxation spaces
• Customers upgrading from a smaller infrared sauna
• Those who want near, mid, and far infrared coverage in one cabin

Why Choose the FD-3

• Carbon + Spectrum™ full-spectrum heating — near, mid, and far infrared in one cabin
• Canadian Grade “A” Clear Western Cedar interior for warmth and durability
• Controller 2.0 digital touchscreen with built-in Bluetooth audio
• Reaches 170°F in less than one hour on 240V
• Reversible ergonomic bench for ultimate comfort
• 8mm tempered glass for superior thermal retention
• Low EMF/ELF design, ETL safety certified, UL listed heater
• No stones, water, or plumbing required

Key Features

• 3–4 person indoor full-spectrum infrared sauna
• Carbon + Spectrum™ heating: Spectrum Plus™ mid/far infrared + Carbon 360° flat panel heaters
• Near infrared LED system with 12 colors plus near infrared cold light therapy
• Controller 2.0 — full digital touchscreen control panel with built-in Bluetooth
• Reaches 170°F in less than one hour on 240V
• Reversible ergonomic bench
• 8mm tempered glass
• Canadian Grade “A” Clear Western Cedar interior
• Thermal Plus™ European Aspen exterior
• Tongue & groove construction with insulated walls
• Low EMF/ELF design
• ETL safety certified | UL listed heater
• No stones or water required

Specifications

• Brand: Finnmark Designs
• Model: FD-3
• SKU: FD-KN003
• GTIN/Barcode: 810127972094
• Capacity: 3–4 persons
• Intended Use: Indoor residential only
• Voltage: 240V
• Watts: 3,150W
• Amperage: 15A
• Plug Type: NEMA 6-15P
• Maximum Temperature: Up to 170°F
• Glass Thickness: 8mm tempered
• Exterior Dimensions: 72" W x 46" D x 78" H
• Interior Dimensions: 67" W x 41.5" D x 70" H
• Door Width: 21.5"
• Bench Dimensions: 67" W x 21" D
• Shipping Dimensions: 80" W x 40" D x 79" H
• Shipping Weight: 605 lbs

What's Included

• Finnmark FD-3 infrared sauna cabin components
• Carbon + Spectrum™ full-spectrum infrared heating system
• Near infrared LED system
• Controller 2.0 digital touchscreen control panel with Bluetooth
• Interior lighting system
• 8mm tempered glass door assembly
• Reversible ergonomic bench
• Mounting hardware and adjustable feet
• Manufacturer documentation

Shipping & Delivery

Free freight shipping is included for delivery within the contiguous United States. In-stock orders typically ship within 4–7 business days.

• Shipping Dimensions: 80" W x 40" D x 79" H
• Shipping Weight: 605 lbs
• Delivered on a wooden pallet — curbside delivery by appointment only
• Freight carrier will contact you to schedule your delivery appointment
• Customer must be present to receive and inspect the shipment

Installation Notes

• Indoor residential installation only
• Install in a dry, climate-controlled environment
• Requires 240V / 15A dedicated circuit with NEMA 6-15P plug
• Professional electrical installation is recommended
• Follow all manufacturer instructions and applicable local building and electrical codes

Warranty

Prime Regeneration is an authorized retailer of Finnmark products. Full manufacturer warranty coverage applies.

• 10-Year Cabin Warranty
• Lifetime Spectrum Plus™ Heater Warranty
• 5-Year Outdoor Warranty
• 5-Year Commercial Warranty

View Full Warranty Document (PDF)

Manuals & Documentation

• FD-3 Specification Sheet (PDF)
• FD-3 Dimensions Diagram (PDF)
• Installation & Operation Manual (PDF)
• Wi-Fi Controller Manual (PDF)
• ETL Safety Certificate (PDF)
• Finnmark Designs Certification (PDF)

Complete Your Wellness Setup

• Finnmark FD-3 Infrared Sauna Cushion — custom-fit marine vinyl seat pad for the FD-3
• Icetubs IceBath Cold Plunge with Heating & Cooling — the ultimate hot/cold contrast therapy pairing

FAQ

Do I need special wiring for this sauna?
Yes. The FD-3 requires a dedicated 240V / 15A circuit with a NEMA 6-15P outlet — this is not a standard household outlet. We recommend having a licensed electrician install the circuit before your sauna arrives.

Does an infrared sauna use steam or water?
No. The FD-3 is a dry infrared sauna — it uses infrared panels to create radiant warmth, with no water, steam, or plumbing involved.

How hot does the FD-3 get?
The FD-3 reaches up to 170°F in less than one hour on a 240V outlet.

Can this sauna go outdoors?
No. The FD-3 is designed for indoor placement only — home gyms, finished basements, wellness rooms, or dedicated sauna spaces.

How much space do I need?
The FD-3 has a 72" W x 46" D exterior footprint and stands 78" tall. Confirm floor space, ceiling height, and doorway/hallway clearance along the delivery path before ordering.

Is financing available?
Yes. Financing options are available for this purchase. Contact us or proceed to checkout to explore available financing plans.

What warranty comes with this sauna?
The FD-3 includes a 10-Year Cabin Warranty, a Lifetime Spectrum Plus™ Heater Warranty, and 5-Year Outdoor and Commercial warranties. See the warranty document linked above.

Still comparing models? Read our Infrared Sauna Buying Guide.