Designed in Finland. Built for premium outdoor living.
A modern CLT sauna crafted for homes, villas, campsites and urban backyards
What is Boxauna?
Boxauna is a premium, transportable sauna built from cross-laminated timber (CLT). Designed in Finland, it combines clean architecture with authentic Nordic sauna tradition.
Models
Boxauna (Original)
Traditional Finnish sauna layout with straight bench seating along the rear wall.
The Original model offers a clean and balanced interior design, ideal for private use, small wellness spaces, and boutique hospitality environments.
Compact exterior footprint with optimized interior space thanks to CLT construction and efficient sauna layout.
Comfortably accommodates 2–4 bathers.
Compatible with UL-approved electric sauna heaters, allowing installation in the U.S. market.
- Straight rear-wall bench layout
- Spacious CLT construction
- Panoramic glass front
- Scandinavian minimalist design
- Ideal for private and commercial use
Boxauna Grande
The Grande model features an L-shaped bench configuration, offering increased seating capacity and a more social sauna experience.
Expanded interior layout designed for greater comfort and flexibility.
Comfortably accommodates 4–6 bathers.
Compatible with UL-approved electric sauna heaters, allowing installation in the U.S. market.
- L-shaped bench layout
- Spacious CLT construction
- Panoramic glass front
- Scandinavian minimalist design
- Ideal for private or commercial wellness spaces
Why CLT?
Boxauna is built from cross-laminated timber (CLT) — an advanced engineered wood used in modern architecture.
CLT provides exceptional structural strength, excellent thermal performance, and long-term durability.
The layered wood construction creates a stable and well-insulated sauna structure that retains heat efficiently while maintaining a natural indoor climate.
In addition to its performance benefits, CLT is a sustainable material made from renewable wood sources and manufactured with minimal waste.
For sauna construction, CLT combines the best of traditional wood warmth and modern engineering precision.
Strength
Cross-laminated timber (CLT) creates an exceptionally strong and stable structure. The layered wood panels provide long-term durability and structural integrity even in demanding outdoor environments.
Moisture stability
The cross-laminated structure reduces natural wood movement and improves resistance to moisture and temperature changes — an important feature for sauna environments.
Natural insulation
Solid CLT panels provide excellent thermal performance, helping the sauna retain heat efficiently while maintaining a comfortable indoor climate.
Designed in Finland. Built for modern outdoor living.
Strength
Cross-laminated timber (CLT) creates an exceptionally strong and stable structure. The layered wood panels provide long-term durability and structural integrity even in demanding outdoor environments.
Moisture stability
The cross-laminated structure reduces natural wood movement and improves resistance to moisture and temperature changes — an important feature for sauna environments.
Natural insulation
Solid CLT panels provide excellent thermal performance, helping the sauna retain heat efficiently while maintaining a comfortable indoor climate.
Key Features
CLT construction
Built from cross-laminated timber (CLT) for exceptional strength, stability, and long-term durability.
Wooden door
Solid wooden sauna door designed for durability, insulation, and authentic Nordic aesthetics.
Electric stove compatible
Designed for UL-approved electric sauna heaters suitable for the U.S. market.
Full-glass front
Large panoramic glass front creates an open, modern feel and connects the sauna with its surroundings.
UL-approved heaters
Compatible with certified electric sauna heaters required for installation in the United States.
Plug & play installation
Pre-built modular structure enables fast installation with minimal site work.
Extreme weather durability
CLT structure and high-quality materials ensure excellent performance in demanding climates.
Scandinavian minimalist design
Clean Nordic architecture that blends naturally with modern outdoor spaces.
Two model sizes
Available in Original and Grande configurations to fit different space and capacity needs.
Become a reseller
Boxauna is now expanding into Europe and the United States. We are selecting a limited group of premium partners for 2025–2026. Nationwide delivery available.