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Finnmark FD-4 Trinity 2-Person Hybrid Indoor Infrared & Traditional Steam Sauna + Red Light Therapy | FD-KN004

Top Authorized Dealer
5 Years Warranty
Save 22% Save 22%
Original price $9,995.00
Original price $9,995.00 - Original price $9,995.00
Original price $9,995.00
Current price $7,795.00
$7,795.00 - $7,795.00
Current price $7,795.00
+ FREE SHIPPING
100% Money Back Guarantee Refund Policy
Trusted by 4,000+ Happy Customers -
Lifetime U.S Based Expert Support - +1 (218) 241 5427
Lead Times - Est. delivery in 3-5 Days
Availability:
Low stock

Special Offer

'Reserve with a 20% Deposit' | Call us now +1 (218) 241 5427

The Trinity Combination Sauna is the only sauna available that combines Finnmark’s UL listed Spectrum Plus infrared heaters combined with a traditional 120V sauna heater, plus true medical grade Spectrum Red Light™ Therapy.

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 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 traditional 1.9kW sauna heater lets you splash water onto the rocks for an authentic steam sauna experience. Enjoy 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.

Traditional Sauna Heater Included.

  • 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 Wi-Fi touchscreen controller with bluetooth audio.
  • Audio with 6" Hi-Fi 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)
  • 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)
  • Infrared Sauna Heater Panels
  • Harvia Vega Compact 1900 Sauna Heater
  • 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).
  • Spectrum LED Near Infrared Ceiling Lights Combined with Medical-Grade Spectrum Red Light Therapy
  • Controller 2.0, Built-In LCD Wi-Fi Touchscreen Control Panel with Bluetooth Audio
  • ETL Certification
  • Limited Warranty

Interior Dimensions 44.25"W x 45.5"D x 75.5"H

Exterior Dimensions 48"W x 48"D x 83"H

Frequently Asked Questions

Shipping Information

We’re committed to providing a smooth and convenient shipping experience for our customers. Here’s everything you need to know about our shipping process.

Shipping Methods and Delivery

Delivery Timelines

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Standard shipping: 3-7 business days

Express shipping: 1-3 business days

International shipping: 7-14 business days

Returns & Exchanges

Easy Returns and Refunds:

We offer a 30-day return policy for your peace of mind. If you’re not fully satisfied with your purchase, you may return the item in its original, new and unused conditionRead full return policy

Product Information

Follow the care instructions on each product label. Most items can be machine washed in cold water and tumble dried on low heat.

Please refer to our size chart on each product page. If you're between sizes, we recommend sizing up for a more comfortable fit.

General Questions

You can reach our customer service team at support@thesaunasupply.com or through our contact form. We typically respond within 24 hours during business days.

We accept all major credit cards, PayPal, Apple Pay, Google Pay, and Shop Pay for secure checkout.

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Why Choose Us vs Other Dealers

See the key differences that set us apart

Our Business Other Dealers
BBB Accreditation
A+ rated and accredited
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Warranty Protection
Full manufacturer warranty
Warranty issues
Money-Back Guarantee
100% satisfaction guarantee
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Free Shipping
Free on all orders
Extra shipping costs
Expert Support
24/7 technical support
Limited support
Product Page - Why Choose Us Section

"The Sauna Supply"

Why Choose Us
✓ Trusted U.S. Based Authorized Dealer
+

The Sauna Supply is proudly based in Blaine, Minnesota, and backed by an A+ BBB rating + North American Sauna Society membership, and verified dealer partnerships. Our U.S. based team is here to support you every step of the way.

✓ BBB Accredited & NASS Verified
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Proudly BBB Accredited with an A Rating, demonstrating transparency, honesty, and a strong customer-first philosophy + Also a local supporting member and verified by the North American Sauna Society (NASS) for upholding authentic sauna standards.

✓ Free Shipping + No Sales Tax
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We provide free shipping on all sauna orders with professional white-glove delivery service available. No sales tax charged in most states, saving you hundreds of dollars on your purchase.

✓ Lowest Price Guaranteed
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We offer the lowest price guarantee on all of our products. Found a better deal elsewhere? Contact us and we will match or beat any competitor pricing, ensuring you get the best value for your investment.

✓ Easy Returns & Exchanges | 30 Days Money Back
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Shop with confidence knowing we offer easy returns and exchanges with a 30-day money back guarantee. Our flexible return policy ensures you are completely satisfied with your sauna purchase.

✓ Secure Payment Options
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Your security is our priority. We accept all major credit cards, PayPal, financing options, and other trusted payment methods. All transactions are fully encrypted and protected with industry-standard security measures.

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