Finnmark FD-4 Trinity Infra-Steam Sauna Finnmark

Finnmark FD-4 Trinity Infra-Steam Sauna

Name: Finnmark FD-4 Trinity Infra-Steam Sauna
Brand: Finnmark
SKU: FD-KN004
Price: 7795.00 USD
Availability: InStock

$7,795.00 USD

You Save

Finnmark

Authorized Dealer Full Warranty Included

30 Day Returnsi Price Match Full Warranty Expert Support

Need help or have a question? (716) 351-5131 Mon to Sun, 8am to 9pm EST

Call now

Description

The Finnmark FD-4 Trinity Infra-Steam Sauna is a 2-person infrared and traditional sauna measuring 48" (121.9 cm) wide × 48" (121.9 cm) deep × 83" (210.8 cm) high, running on a 120V 15.9A supply. It reaches 170° F on infrared and 190° F on the traditional heater.

No need to compromise. Finnmark's FD-4 Trinity is the only combination sauna with true UL listed infrared heaters together with a traditional sauna heater. Get all the benefits of infrared combined with traditional rocks with steam. Get hot fast! The only IR heaters that have passed the rigorous tests from Underwriter Laboratories used in tandem with a traditional steam sauna stove. Short wave far-infrared penetrates muscles, joints, and makes you sweat 25 times more than carbon panel heaters.

Spectrum Plus UL Listed short wave infrared heaters for deep penetrating heat, up to 25x more than standard carbon panel heaters.
Spectrum Red Light Therapy. 192 Diode medical grade LED panel capable of producing highly beneficial 650nm of red light therapy combined with chromotherapy for those days you need a little love.
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 Design's full spectrum infrared saunas one of the healthiest and longest lasting saunas on the market.
3-IN-ONE Combination. Compromise no more. Introducing the only combination sauna with true UL listed infrared heaters combined with a traditional heater that produces high heat steam. Get all the benefits of infrared combined with traditional rocks with steam all while soaking in the benefits of a medical grade Red light therapy LED panel.

What's Included

Cabin
Bottom Panel, Top Panel, Back Panel, Front Panel, Left Panel, Right Panel, Glass Door, Bench Support, Bench Top, Door Handle (2 Screws) Heating & Controls
Heater Cable, Floor Cable, Power Supply Unit, Power Cable, Interior Heater Connections with Wood Cover, Infrared Sauna Heater Panels, Harvia Vega Compact 1900 Sauna Heater, Medical Grade LED Red light therapy with 650nm plus color chromotherapy, V2 LCD Controller 5" Touchscreen with Bluetooth Also in the Box
Screws, 1 Box of the Harvia AC3000 0-10cm sauna stones (29 lbs)

Please note that each natural stone is unique in shape and size. We recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function (Additional freight charges will apply).

Required to Operate

These are not included. You need them before the sauna will run.

Electrical
A dedicated 120V circuit rated at least 15.9 A, plus a supply for the traditional heater — the file gives no separate figure for it, so have your electrician size the combined load from the nameplate. Assembly Space
The panels clip together without tools beyond the supplied screws, but you need clear access on every side while you build it.

Product Specifications

Finnmark Part Number	FD-KN004
Capacity	2 person
Infrared Output	1750 W (1.7KW)
Traditional Heater Output	1900 W (1.9KW)
Maximum Temperature	170° F
Traditional Heater Maximum	190° F
Room Volume	86 (ft³)
Exterior Materials	Canadian Aspen
Interior Materials	Western Red Cedar
Material	Wood
Glass	Tempered 8mm (0.8 cm) W/Gasket
Door Size	67.875" x 23.625" (172.40 cm x 60 cm)
Dimensions	48" (121.9 cm) × 48" (121.9 cm) × 83" (210.8 cm)
Weight	437 lbs (198.22 kg)
Shipping Weight	485 lbs (219.99 kg)
Certification	ETL certified
Warranty	2 year (consumer use)
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.

Electrical Requirements

Circuit	Output	Voltage	Phase	Rated Amps
Infrared	1750 W	120V	Single	15.9 A
Traditional Heater	1900 W	—	—	—

Dedicated Circuit
120V, hardwired or on its own dedicated outlet. Have a licensed electrician confirm the supply before delivery. Two Heat Sources
The infrared panels and the 1900 W traditional heater are separate. The file publishes an amperage for the infrared side only — your electrician should size the combined load from the nameplate and manual. Who Installs It
A licensed electrician, working to the installation manual and your local electrical code.

Size & Capacity

The FD-4 Trinity Infra-Steam Sauna seats 2. Interior 45.2" (114.9 cm) × 44.5" (113 cm) × 75.5" (191.7 cm); exterior 48" (121.9 cm) × 48" (121.9 cm) × 83" (210.8 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
2 person Interior
45.2" (114.9 cm) × 44.5" (113 cm) × 75.5" (191.7 cm) Exterior
48" (121.9 cm) × 48" (121.9 cm) × 83" (210.8 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

Wellness Benefits

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.

Accessories for This Model

Finnmark makes these to fit the FD-4. All sold separately.

Sauna Cover
Finnmark FD4 Sauna Cover Sauna Cushion
Finnmark Combination Sauna Cushion

Harvia Parts Fitted

The traditional side of this cabin is a Harvia heater on Harvia stones. Those are the same parts we stock, so replacements and extra stones are easy to source.

Traditional Heater
Harvia Vega Compact 1900 1.9 kW Electric Sauna Heater

Installation & Use Notes

The cabin arrives flat as numbered panels and assembles with the supplied screws. Two people and a couple of hours is the usual job.
Site it on a level floor. The supplied adjustable feet take up small variations, but the panels need a flat base to seat squarely.
Infrared cabins are for indoor use on a finished floor. Leave clearance at the back for the power connections and airflow.
The traditional heater takes sauna stones and water; the infrared panels do not. Never pour water onto an infrared panel.

FAQs

What electrical supply does the FD-4 need?

A dedicated 120V circuit rated at least 15.9 A for the infrared side. The traditional heater is a separate 1900 W load and the file publishes no amperage for it, so have your electrician size the combined draw from the nameplate.

What does Infra-Steam mean on the FD-4?

It has both heat sources: 1750 W of infrared panels reaching 170° F, and a 1900 W traditional heater reaching 190° F, so you can take a dry infrared session or a conventional steam sauna in the same cabin.

Will the FD-4 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 48" (121.9 cm) × 48" (121.9 cm) assembled footprint. Measure your space against the exterior dimensions above.

Downloads

FD-KN004 Spec Sheet

FinnMark-Trinity-IOM-2023.pdf

Finnmark-Designs-V2-WIFI-Controller-Manual-Updated-2024-V2.9 (2).pdf

PR108242_EMF-Test-Log-Finnmark-Designs.pdf

Finnmark-Infrared-Sauna-Warranty.pdf

Finnmark FD-4 Trinity Infra-Steam Sauna

$7,795.00 USD

FAQ

Ordering & Payment

Are you an authorized dealer?

Yes. We're an authorized dealer for every brand we carry, so your purchase includes the full manufacturer warranty.

Do you offer financing?

Yes. You can pay over time with Shop Pay Installments at checkout on orders up to $30,000. Available plans and rates depend on your order total and approval, and you'll see your options before you pay.

Shipping & Delivery

Where do you ship?

We currently ship within the continental United States only. We don't ship to Alaska, Hawaii or Canada at this time.

How long will my order take?

Orders are processed within 1-2 business days, and orders placed before 2 PM EST start processing the same day. Orders don't process or ship on weekends or holidays, so anything placed after 2 PM on Friday or over the weekend starts processing the next business day. In-stock items usually arrive within 3-9 business days.

Some products are made to order and take longer. When that's the case, the lead time is listed on the product page.

How does freight delivery work?

Larger items ship by freight. Here's what to expect:

The carrier will call to schedule a delivery window, Monday to Friday
Someone 18 or older needs to be there to receive and sign for it
Delivery is curbside, lowered by liftgate to your driveway or nearest accessible spot
Please double check your phone number at checkout so you don't miss the carrier's call

Installation

Does it come assembled?

It depends on the product. Some items arrive ready to use, while others need assembly. Check the product page for what's included, and download the manual for full setup instructions.

Do I need a professional to install it?

Many products can be set up yourself. For anything involving a natural gas line, hardwired electrical or built-in installation, we recommend a licensed professional and checking your local codes.