ThermaSol · Outdoor Sauna
ThermaSol Fortis Sauna Cabin
Fully Assembled Outdoor Sauna, Tinted Glass Front with Eave, Up to 4 Persons
ThermaSol Fortis Sauna Cabin
Overview
The Fortis Sauna Cabin from ThermaSol is a sleek, enclosed outdoor retreat that delivers an energy efficient and durable wellness experience for all seasons.
Combining contemporary architecture with robust materials, the Fortis Sauna Cabin is a private, light-filled wellness sanctuary.
The Fortis is highlighted by the modern, eave-style roofline offering a slight overhang which encapsulates the sauna interior. The Nordic thermo-spruce and pinewood exterior features unique natural textures to blend in with the outdoors, a stark contrast with the contemporary glass front. Parsol dark grey glass with aluminum framing adorns front-facing facade, with hidden hinges and coat hooks offering both sleek styling and utility.
Inside, the Fortis hosts multi-layer wood fiber insulation to keep the interior cozy and energy efficient year-round. Brushed thermo-spruce walls offer a warm, textural contrast in comparison to the sleek thermo-aspen benches and backrests. RGB LED illumination from recessed locations compliment the inviting atmosphere, with an included control to adjust users desired ambiance. Bathing enthusiasts can sit back and enjoy the Harvia Virta's abundant heat and steam through the Harvia Xenio control for year-round sauna sessions.
Key Features
- Brushed Thermo-Spruce and Pinewood exterior offering unique contrast with a natural finish.
- Thermo-aspen interior walls, benches and backrests for comfort, stability and moisture resistance.
- 8mm Parsol Dark Grey Glass with hidden aluminum framing for a contemporary look which provides solar protection.
- All-season durability provided by multi-layer wood fiber insulation and a Firestone EPDM roof.
- Integrated RGB LED color light therapy with control for a custom ambiance.
- Ideal for gardens, patios, and backyard wellness spaces.
- Arrives fully assembled with pre-wired electrical for turnkey use.
- Dimensions: 87"W (221 cm) x 90"D (228.6 cm) x 89"H (226.1 cm)
- Designed and crafted in the U.S.A.
- 1-year warranty
Every Detail
Specifications & Details
Full Specifications
Model: FORTIS SAUNA CABIN
Exterior Material: Brushed Thermo-Spruce & Pinewood
Interior Material: Thermo-Aspen
Door Material: 8mm Parsol Dark Grey Glass with Hidden Aluminum Framing
Sauna Heater: Harvia Virta 8kW with Wi-Fi
Capacity: 3-4 People
Width: 87" (221 cm)
Depth: 90" (228.6 cm)
Height: 89" (226.1 cm)
Bench Depth: 24" (61 cm)
Lighting: RGB LED Color Light Therapy
Weight: 2161 lbs (980.2 kg)
Shipping Weight: 2381 lbs (1080 kg)
Sauna Control: Harvia Xenio CX45 with Wi-Fi
Specifications subject to change. Please contact us to verify current specifications before purchase.
Dimensions & Weight
Capacity: 3-4 People
Width: 87" (221 cm)
Depth: 90" (228.6 cm)
Height: 89" (226.1 cm)
Bench Depth: 24" (61 cm)
Weight: 2161 lbs (980.2 kg)
Shipping Weight: 2381 lbs (1080 kg)
Materials & Construction
Model: FORTIS SAUNA CABIN
Exterior Material: Brushed Thermo-Spruce & Pinewood
Interior Material: Thermo-Aspen
Door Material: 8mm Parsol Dark Grey Glass with Hidden Aluminum Framing
Lighting: RGB LED Color Light Therapy
Electrical Requirements
Sauna Heater: Harvia Virta 8kW with Wi-Fi
Sauna Control: Harvia Xenio CX45 with Wi-Fi
What's Included
- Pre-Assembled Sauna Cabin
- Harvia Virta 8kW Sauna Heater with Wi-Fi
- Harvia Xenio CX45 Digital Control with Wi-Fi
- Harvia AC3020 Sauna Stones (3 Boxes)
- Installation Instructions
- 1-Year Warranty
Installation & Site Prep
ThermaSol outdoor saunas are delivered fully assembled via flatbed trailer; you are notified about two weeks before delivery. A forklift or crane is required for unloading and placement — manual offloading is not recommended.
Install on a firm, level surface with slight runoff for drainage (concrete, decking, pavers, or compacted gravel), with a clear, accessible path from the delivery point. A licensed electrician must connect the heater. See the product manual for full guidelines.
Customization & Options
Glazing: Dark Grey Glass.
Sauna Co. Policies
Shipping, Warranty & Returns
Shipping & Delivery
Free shipping on all orders within the contiguous United States (lower 48). We do not ship to Alaska, Hawaii, Puerto Rico, U.S. territories, or internationally.
Saunas are made-to-order and typically ship within 1–2 weeks (some models up to 3–4 weeks with customization). Large units ship via LTL freight on a pallet or crate. Freight delivery is curbside — the driver brings it to the end of your driveway or curb and is not obligated to unpack or move it onto your property.
Transit is roughly 3–7 business days (East Coast) or 7–10 business days (West Coast) after shipment. Inspect before signing and note any damage; report concealed damage within 5 days. Questions: shipping@saunacompanyusa.com · 856-426-8530.
Warranty Coverage
Each ThermaSol sauna is backed by a 1-Year Limited Warranty against manufacturer defects in materials and workmanship under normal residential use, beginning on the delivery date to the original purchaser. Valid claims receive replacement parts at no cost.
Accessories are not covered. Sauna Co. handles warranty claims directly — submit a claim through our contact page.
Returns & Refunds
Due to the custom-built and handcrafted nature of our products, we maintain a strict no-return policy. We do not accept returns for change of mind, buyer's remorse, or unsuitability after delivery — even for unopened or unused items.
Used, installed, assembled, or tested products; custom or special-order items (size, finish, accessories); and clearance / open-box / final-sale items are not returnable. The only exception is a qualifying manufacturer defect under warranty. Questions before ordering: info@saunacompanyusa.com.
Installation & Assembly
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 if needed.
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.
Financing Options
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.
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 · 856-426-8530.
Resources
Documents & Manuals
Specification Sheet
ThermaSol · Outdoor Sauna
Designed Around You
Fully Assembled Outdoor Sauna, Tinted Glass Front with Eave, Up to 4 Persons
ThermaSol · Outdoor Sauna
Craft You Can Feel
Premium materials, precision joinery, and a finish built to last decades.
Crafted to Endure
Built for a Lifetime
Thermally modified timber and precision construction that ages beautifully, season after season.
Explore the CollectionExplore the Details
Tap the markers to see what sets it apart.
Tinted Glass Front
An 8mm Parsol Dark Grey tinted glass front with hidden aluminum framing frames the view.
Sheltering Eave
A built-in eave shelters the entrance — a signature of the fully-assembled outdoor Fortis.
Thermo-Spruce & Pinewood
Brushed Thermo-Spruce and pinewood cladding is weather-built for year-round outdoor use.
The Experience
A Modern Sanctuary for the Backyard
The Fortis Sauna Cabin from ThermaSol is a sleek, enclosed outdoor retreat that delivers an energy efficient and durable wellness experience for all seasons.
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to a friend
The Fortis is a serious, substantial sauna with premium materials and beautifully even heat. For a purchase of this magnitude, Sauna Co.'s white-glove freight, site-prep guidance, and constant communication made it feel effortless. The finished cabin is the centerpiece of our home.