Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis

Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis

$52,312.86 USD
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Architecture You Can Feel.

Some structures are designed simply to occupy space. Others transform the way we experience it. The ThermaSol Fortis Outdoor Sauna Cabin is an architectural expression of modern wellness—combining refined design, premium materials, and exceptional craftsmanship to create a destination for restoration. Whether integrated into a contemporary residence, boutique hospitality project, or private wellness retreat, it becomes more than a sauna. It becomes a place where architecture, nature, and wellbeing quietly come together. At EIRA, we believe the most memorable environments are those that change how people feel, long before they notice how beautifully they are designed.

  • 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

Fortis Sauna Cabin

  • 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

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

Shipping costs are determined based on location. Outdoor saunas are delivered via flatbed trailer and fully assembled.

Customers are notified two weeks prior to the scheduled delivery to allow time for preparation. A forklift or crane is required for placement, and a licensed electrician must install the heater. Due to its size and weight, manual offloading is not recommended. Please ensure the proper equipment is available at the time of delivery.

Please ensure you are fully prepared to receive and unload your sauna in accordance with the instructions provided in your manual.

The path from delivery point to placement site must be clear and accessible for equipment. Saunas should be installed on a firm, level surface with slight runoff for drainage—such as concrete, decking, pavers, or compacted gravel.

For complete guidelines, please refer to the product manuals.

Key Features

Architectural Presence
Contemporary design creates a sculptural outdoor retreat that complements modern residential and hospitality projects.

Premium Materials
Exceptional craftsmanship and carefully selected materials ensure long-lasting beauty and durability.

Designed for Daily Wellness
Creates a dedicated place for restoration, relaxation, and intentional daily rituals.

Four-Season Performance
Engineered to perform beautifully throughout the changing seasons.

Timeless Luxury
A refined aesthetic ensures the Fortis remains relevant and beautiful for years to come.

Contemporary Architecture
Clean modern lines transform the sauna into a natural extension of today's luxury homes.

Premium Materials
High-quality construction delivers lasting performance while elevating the visual experience.

Thoughtful Interior Design
Designed to encourage comfort, relaxation, and longer restorative sessions.

Built for Outdoor Living
Engineered for year-round enjoyment in a wide range of climates.

Designed as a Destination
More than a sauna, the Fortis creates a dedicated place to disconnect from daily demands and reconnect with yourself.

Integrated RGB LED color light therapy with control for a custom ambiance. Arrives fully assembled with pre-wired electrical for turnkey use.

Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis
Luxury 4-Person Outdoor Sauna Cabin | ThermaSol Fortis

Every restorative outdoor space is thoughtfully composed.

Complete Your Sanctuary

Pair this with complementary elements to create a complete wellness experience.

• Luxury outdoor saunas for contrast therapy

• Luxury Cold Plunges & Ice Baths

• Luxury Outdoor Shower for transition between experiences

• Luxury Outdoor Hot Tubs

• Sanctuary Design Services

Shop all Sanctuary Elements

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