
FINNMARK DESIGN
Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo
The FD-5 Trinity XL is Finnmark's most versatile cabin — generous 4x6 footprint with dual-mode heat so your whole household can customize every session.
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Specifications & Details
Full Specifications
Model: FD-5 Trinity XL
Capacity: 4 Person
Heat Source: Infrared + Traditional Combo + Red Light Therapy
External Materials: Thermal Plus™ Aspen
Interior Materials: Antimicrobial Western Canadian Cedar
Exterior Dimensions: 75"W × 64"D × 83"H
Interior Dimensions: 71"W × 57.5"D × 75.5"H
Room Volume: 130 cu. ft.
Maximum Temperature: 170°F (IR) / 190°F (Traditional)
IR Watts: 2,700W | Traditional Heater: 4.5kW (Harvia KIP Series B)
IR Voltage: 240V / 15A — NEMA 6-15P
Traditional Heater Voltage: 240V / 1-Phase — dedicated circuit required
Note: Two separate dedicated circuits required — one for IR, one for the traditional heater. Consult a licensed electrician before installation.
Glass: 8mm Tempered Glass Door
Specifications subject to change. Please confirm before purchase.
What's Included
- All wall, ceiling, and floor panels (pre-assembled kit)
- 8mm Tempered Glass Door with handle
- Infrared Sauna Heater Panels (Spectrum Plus™ UL Listed)
- Spectrum Red Light™ Therapy Panel (192-diode medical grade LED, 650nm)
- Harvia KIP Series B 4.5kW Traditional Sauna Heater (included)
- 1 box Harvia AC3000 sauna stones (44 lbs)
- Controller 2.0 — Built-in LCD Wi-Fi Touchscreen with Bluetooth Audio
- 6" Hi-Fi Speakers
- Extra large two-tier bench system
- Power Supply Unit and power cable
- Interior heater connections with wood cover
- All necessary screws and fasteners
- Assembly instructions
Health Benefits
- Finnmark's Spectrum Plus™ incoloy short-wave infrared heaters warm your core body temperature for a deep, therapeutic sweat — supporting cardiovascular health, muscle recovery, and stress relief.
- Full-spectrum infrared (near, mid, and far wavelengths) penetrates deeper than standard carbon panel heaters, triggering up to 25x more sweat at lower, more comfortable air temperatures.
- Low-EMF design, independently tested at a NASA award-winning facility, ensures a safe and healthy session every time.
- Regular infrared sauna use is associated with reduced inflammation, improved circulation, and enhanced detoxification through sweat.
Shipping & Warranty
Shipping: This Finnmark sauna ships FREE via LTL freight to the contiguous United States. Allow 5–10 business days for dispatch after order confirmation. A tracking number is emailed within 24 hours of shipment.
About This Delivery
The weight and packaging of this handcrafted sauna sanctuary requires delivery by special appointment and on a wooden pallet. The driver is responsible for “curbside delivery only” and will lower the items to ground level. Prior to shipping, we contact customers to share shipment details and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses. Our goal is to ensure your project’s success.
Heater Systems & Accessory Freight
Sauna heater system and accessories may ship in a protective box on top of this room’s crate — if so, shipping and packaging is FREE. All shipping and packaging is included at no additional cost.


Trinity XL Combo
Three Therapies in One
A four-person combination sauna uniting UL-listed infrared, a traditional stone-and-steam heater, and medical-grade red light.
Seats Four
Steam Meets Deep Heat
Ladle water over the stones for a rich, steamy session while short-wave infrared warms you from every side.

Finnmark FD-5 Trinity XL Infrared & Steam Sauna Combo
Shipping & Delivery
- Free shipping to the contiguous U.S. (Lower 48 states).
- Ships via LTL freight on a pallet — curbside delivery only. Driver will call ahead to schedule; you are responsible for moving from curbside to your install location.
- Allow 5–10 business days for processing and dispatch. You will receive a tracking number by email once shipped.
- Alaska, Hawaii & Puerto Rico — we ship there! Call or text (877) 417-9006 first for a freight quote; online checkout is limited to the Lower 48. No international shipping.
Key Features
Bundle Your Saunacustomize & add extras
Shipping to Alaska, Hawaii, or Puerto Rico?

Sauna Company USA Policies
Shipping, Warranty & Returns
Shipping & Delivery
Shipping: This Finnmark sauna ships FREE via LTL freight to the contiguous United States. Allow 5–10 business days for dispatch after order confirmation. A tracking number is emailed within 24 hours of shipment.
About This Delivery
The weight and packaging of this handcrafted sauna sanctuary requires delivery by special appointment and on a wooden pallet. The driver is responsible for “curbside delivery only” and will lower the items to ground level. Prior to shipping, we contact customers to share shipment details and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses. Our goal is to ensure your project’s success.
Heater Systems & Accessory Freight
Sauna heater system and accessories may ship in a protective box on top of this room’s crate — if so, shipping and packaging is FREE. All shipping and packaging is included at no additional cost.
Warranty Coverage
10-Year Structural Warranty
Finnmark Design warrants the sauna cabin structure, wood panels, frame, and assembly against defects in materials and workmanship for 10 years from the original purchase date, for residential use.
Unconditional Lifetime Warranty — Spectrum Plus™ Heaters
The Spectrum Plus™ incoloy short-wave infrared heating elements carry an unconditional lifetime warranty — not a “limited” lifetime warranty. These elements are rated for approximately 40,000 operational hours (~130 years at 5 sessions/week). The Carbon 360° mid-wave infrared panels are rated for ~30,000 hours and are covered under the same heater element lifetime warranty.
Not Covered
- Minor surface dents, scratches, scuffing — normal
- Fine hairline cracks in wood — normal wood movement
- Commercial, rental, or shared-access installations
- Damage from improper installation or modification
To File a Claim
Email info@saunacompanyusa.com with your order number and photos of the defect.
Returns & Refunds
30-Day Return Policy
We accept returns on this product within 30 days of delivery. To initiate a return, email info@saunacompanyusa.com with your order number.
Shipping Damage — If the return is required due to damage, include photos of the damage and note whether shipping damage was recorded upon signing for delivery. Shipping costs are fully covered for carrier-caused damage.
No-Damage Returns — No restocking fee is charged. You will be issued a credit for the full amount paid, less any required new boxing fees of approximately $20–$50 depending on the product.
Damaged Product — If the product is damaged, you will be notified to file a claim with your shipper. We assist throughout the process.
View our full Return Policy for complete details.
Installation & Assembly
Curbside Delivery
Freight deliveries are curbside only — the driver will not unpack or carry items indoors. You are responsible for moving the product from curbside and for any assembly. Please arrange help or local movers for delivery day.
Inside Delivery Option
White Glove or inside delivery (and, where available, assembly) can be arranged before shipment for an additional charge. Ensure the freight truck can access your location and that the path to the install site is clear before your delivery date.
Financing Options
Payment Methods
Payment is made at the time of order via the methods we offer — major credit cards, PayPal, and financing partners. Payment processing is handled securely by our third-party processors.
Pricing & Tax
All prices are in U.S. dollars; applicable sales tax is calculated at checkout. Tax-exempt? Provide documentation prior to purchase. Questions: info@saunacompanyusa.com · 877-417-9006.
Resources
Documents & Manuals
Trinity Installation & User Manual
Warranty
10-Year Structural Warranty
Finnmark Design warrants the sauna cabin structure, wood panels, frame, and assembly against defects in materials and workmanship for 10 years from the original purchase date, for residential use.
Unconditional Lifetime Warranty — Spectrum Plus™ Heaters
The Spectrum Plus™ incoloy short-wave infrared heating elements carry an unconditional lifetime warranty — not a “limited” lifetime warranty. These elements are rated for approximately 40,000 operational hours (~130 years at 5 sessions/week). The Carbon 360° mid-wave infrared panels are rated for ~30,000 hours and are covered under the same heater element lifetime warranty.
Not Covered
- Minor surface dents, scratches, scuffing — normal
- Fine hairline cracks in wood — normal wood movement
- Commercial, rental, or shared-access installations
- Damage from improper installation or modification
To File a Claim
Email info@saunacompanyusa.com with your order number and photos of the defect.
The Experience
The Outdoor Sauna, Perfected
Crafted as a fully-assembled architectural retreat, this is outdoor living elevated — premium Nordic timber, expansive glass, and the quiet luxury of heat on demand.
Watch before you build
Installation Guide — Trinity XL Combo Sauna
Full infrared kit installation walkthrough — the Trinity XL uses the same panel-based assembly as the standard Finnmark FD-Series.
to a friend
Everything went well overall, starting with delivery that arrived earlier than projected. But the info about the hard wiring required was not exact, so I had to bring the electrician back to complete the connection for the conventional heater, which could have been avoided and meant extra cost. The panels and hardware to put together were precise though, so real kudos for the assembly side. The combo of infrared and traditional steam is fantastic once running.
The FD-5 Trinity gives you a gentle infrared warm-up and then a full traditional steam session, and I love being able to choose. The infrared is ready almost instantly while the traditional heater takes about 40 minutes. The wood is beautiful and the glass front is generous. Curbside freight delivery was smooth and the DIY panel assembly was clearly labeled.
Having both infrared and traditional in one cabin is incredibly versatile. On busy days I do a quick infrared session; on weekends I do a full steam. The build quality is excellent and the panels went together well over a weekend. Just be sure to line up an electrician for the traditional heater circuit. Freight arrived curbside on schedule.
Our family loves that the FD-5 does both infrared and traditional. The kids and my wife prefer the milder infrared while I go for the hot steam. The cabin is roomy, the wood is gorgeous, and the heat is even. DIY assembly took a weekend with the labeled panels. Curbside delivery was well coordinated. Great combo unit.
If you cannot decide between infrared and traditional, get this and stop debating. The flexibility is worth every dollar. The infrared comes on fast and the traditional heater delivers a deep, authentic sweat. Build quality is high and the wood is beautiful. The only planning note is the electrical for the conventional heater. Curbside freight was professional.
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