Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-1 Full Spectrum 1-Person Infrared Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Saunas Sauna Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna

Finnmark Saunas

Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna

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Sale price$7,795.00 Regular price$8,295.00
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Model: FD-KN004
3-in-1 Sauna – Infrared, steam, and red light therapy in one.
Reaches up to 170°F in under 1 hour
Antimicrobial Cedar interior resists mold & bacteria
Thermal Plus™ Aspen exterior won’t warp or decay
Combines UL-listed Spectrum Plus™ & Carbon 360° panels
Low EMF design tested by NASA-award facility
High-emissivity heaters for deeper heat penetration
Handcrafted durability with over 15,000 sold
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Free Shipping to United States. Finnmark saunas are in high demand! Premium Saunas guarantees the fastest delivery available. Curbside delivery only and will lower the item's to ground level.
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2-Person Home Sauna with Infrared & Traditional Heat 48"W x 48"D x 78"H

The Trinity Combination Sauna is the only sauna available that combines Finnmark’s UL listed Spectrum Plus infrared heaters combined with a Harvia Vega 120V traditional heater, plus true medical grade red light therapy.

Eco-Friendly and Efficient Design:

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. Furthermore, the IR panels, red light therapy, and the Harvia Vega heater are all powered by standard 120V and can be plugged into a common outlet, so no electrician is needed. Get all the benefits of infrared combined with traditional rocks with steam.

Contemporary Amenities for an Enhanced Experience:

"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. The Harvia Vega traditional 1.9kW sauna heater lets you splash some water onto the rocks for a luxurious steam sauna experience. Reap the benefits and the intensity only offered by a steam sauna."

Red light therapy is a type of phototherapy that uses low-level light wavelengths to penetrate the skin and stimulate the production of collagen and other proteins, which can lead to numerous potential health benefits. It’s a perfect enhancement to your sauna wellness ritual.

Features

  • 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.
  • Built-in LCD touchscreen controller with Bluetooth audio.
  • Audio with 6" HiFi marine grade speakers, 8mm tempered glass for the ultimate thermal retention.
  • Extra large two-tier bench system
  • Low EMF sauna tested by a NASA award winning testing facility.
  • High Emissivity infrared heaters

Harvia Vega Compact 1900:

  • Wall-mounted design
  • Stainless Steel construction
  • 1.9kW
  • For sauna rooms from 70 to 106 cu. ft.
  • Requires a minimum of 29 lbs of sauna stones (1 Box-AC3000)
  • 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).
  • Built-in controls
  • Ergonomic operating switches
  • Switches can be installed on the right or left side of the heater
  • Designed, engineered, and made in Finland
  • Dimensions: 11"W (279mm) x 11"D (279mm) x 21" (533mm)
  • 2-Year Warranty (Consumer use)
  • Manufacturer's Note: Sauna heater stones are significant to the unit's safety. In order for the warranty to remain valid, the user is responsible for proper maintenance.

Package Contents

  • Bottom Panel
  • Top Panel
  • Back Panel
  • Front Panel
  • Left Panel
  • Right Panel
  • Glass Door
  • Bench Support
  • Bench Top
  • Heater Cable
  • Floor Cable
  • Screws
  • Power Supply Unit
  • Power Cable
  • Interior Heater Connections with Wood Cover
  • Door Handle (2 Screws)
  • Removable and adjustable sauna feet for uneven surfaces
  • 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
  • ETL Certification
  • Limited Warranty

Specifications

Model FD-4
External Materials Thermo-Aspen
Interior Materials Western Red Cedar
Volts 120
IR Watts 1750
Amperage 15/20
Plug Type NEMA 5-15P
Outlet Standard 120v 20a
Maximum Temperature IR 170F - Traditional 190F
Interior Dimensions 44"W x 45'D x 75"H
Exterior Dimensions 48"W x 48"D x 83"H
Room Volume 86 cu. ft.
Door Dimensions 23.625"W x 68.875"H
Door Handle Dimensions 1.5"W x 13.25"H
Glass Thickness 8mm W/Gasket
Product Weight 437 lbs
Shipping Dimensions 36"W x 80"D
Shipping Weight 485 lbs W/48 lb Pallet

Resources

Hot Rock Steam & Next-Level Infrared Technology

Experience the best of both worlds with Finnmark Designs’ exclusive 3-in-1 combination sauna—the only models featuring UL-listed full-spectrum infrared heaters paired with a Harvia traditional rock heater for authentic steam sessions.

Spectrum Plus™ Short Wave Infrared Heaters – Deliver deep, penetrating heat up to 25× stronger than standard carbon panels.

Spectrum Carbon Long Wave Heaters – Provide 360° of even, full-body infrared warmth.

Spectrum LED Near Infrared Lights – Combine medical-grade red light and color therapy for advanced rejuvenation.

Reaching 170°F in under an hour, this cutting-edge system offers true infrared therapy, traditional steam, and red light benefits—all in one uncompromising design.

Cedar Interior with Thermal Plus™ Exterior

Experience unmatched durability and purity with Finnmark Designs’ advanced wood construction.

“A”-Grade Western Canadian Cedar Interior – Naturally antimicrobial and resistant to mold, bacteria, and fungi, ensuring a clean, safe sauna environment. Unlike white woods such as hemlock, aspen, or poplar—which trap moisture and toxins—cedar remains hygienic and long-lasting.

Thermal Plus™ Aspen Exterior – Crafted using pure heat and steam (no chemicals or additives) in high-tech autoclaves, creating wood that won’t rot, warp, decay, or chip—even after years of use.

Built from premium materials that outlast and outperform cheaper alternatives, Finnmark Designs saunas are among the healthiest and most durable full-spectrum infrared saunas available today.

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