Authorized DealerFree Curbside DeliveryShop Pay Installments (subject to approval)
Strength & Wellness Supply · Saunas
Coming Soon
FD-4 Trinity Infra-Steam Sauna
SKU · FD-KN004

FD-4 Trinity Infra-Steam Sauna

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. No need to compromise.

$7,795
Coming Soon
This product will be available for purchase shortly. Sign up to be notified when it launches.
Free curbside delivery
White-glove available.
Manufacturer warranty
Honored in full.
Shop Pay Installments
Subject to approval.
Phoenix-based support
Same-day reply.
Key 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.
  • 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
Questions? Call(602) 883-2804·or text(623) 300-0464
Authorized DealerDirect from manufacturer
Free Curbside DeliveryWhite-glove available
Shop Pay InstallmentsSubject to approval
Manufacturer WarrantyFully honored
Phoenix-Based ExpertsNo-pressure guidance
§ 02 · Specs Snapshot

The numbers.

SKU FD-KN004
Model
FD-4
Category
Infrared Sauna
Construction
WOOD
Shipping
LTL Freight — LTL
Door Dimensions
67.875" x 23.625" (172.40 cm x 60 cm)
Door Handle Dimensions
13.25" x 1.5" (33.65 cm x 3.81 cm)
Product Weight
437 lbs (198.22 kg)
Shipping Weight
485 lbs (219.99 kg)
Dimensions Diagram
Dimensions Diagram
Warranty
Warranty
§ 03 · The Story

Why this model.

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. 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. 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.

FD-4 Trinity Infra-Steam Sauna
§ 04 · Assurance

Delivery, financing, warranty — handled.

Free Curbside Delivery
Most orders ship free. White-glove available on request.
Shop Pay Installments
Split payments at checkout, subject to approval.
Manufacturer Warranty
Honored in full — never outsourced.
Phoenix-Based Support
Direct specialist access — same-day reply.
§ 05 · FAQ

Common questions.

What's the actual delivery experience?
Freight carrier calls to schedule a delivery window. They offload to the end of your driveway (curbside). White-glove in-home setup is available on request and quoted at the time of order.
How long does assembly take?
Indoor infrared saunas: 2–3 hours with one helper — no special tools required. Outdoor barrels and home-gym equipment: 3–5 hours, typically two adults. Every product ships with step-by-step instructions.
Is financing available?
Yes. We offer Shop Pay Installments at checkout. Monthly payments vary by product and are subject to approval. No rate is guaranteed until the application is reviewed.
What warranty is included?
Every product includes the full manufacturer warranty — the same coverage as buying direct from the brand. We're an authorized dealer for every product we carry.

Questions about the FD-4 Trinity Infra-Steam Sauna?

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§ 06 · More in this collection

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Questions?

Talk to a specialist.

Phoenix-based specialists reply within a few hours. No pressure, no spam.

Request Custom Quote (602) 883-2804

Or text (623) 300-0464