Specs
DIY Friendly DIY Friendly Saunas means a professional is not required for the build. Basic tools like a drill, hammer, and level are typically required. With Sauna Marketplace, you do not risk your warranty by assembling a sauna yourself. If you prefer a professional installation, please reach out to the Sauna Marketplace team so we can check for a trusted installer near you.

Yes

*An electrician is still required for all electrical work!
Exterior Shortest Side (in)

53

Exterior Height (in) Maximum exterior height from earth to roof peak

87

Exterior Longest Side (in) Maximum Exterior Length of the longest side when assembled.

56

Exterior Materials

Thermally Modified Spruce

Thermal Modification of wood is a natural process using heat and steam in a vacuum to alter wood at a cellular level. When done right, it makes the wood significantly more durable, stable, and longer lasting. Thermo-Spruce is darker than raw spruce wood, closer in color and performance to Western Red Cedar.
Insulation

Single Layer of Wood

While the R-Value is much lower than an insulated wall, saunas made with a single layer of wood have good thermal mass and can easily dry to the interior and exterior.
Made in

Across the Gulf of Finland, Estonia has a vibrant and growing sauna industry. They're known for innovative design, modern manufacturing, and premium sauna products at an affordable price.
Wi-Fi Option

Yes

Warranty

5

Shipping Method

LTL Curbside Delivery w/ Lift Gate Service

Our shipping partners will deliver your sauna curbside. They are not responsible for moving it into the garage or final location but you might get lucky. Please contact Sauna Marketplace to plan for a smooth delivery and installation.
People

1

,

2

Model

Mini Square

Attachments
Video Attachments

Planning Session

We'd love the opportunity to answer your questions, learn about your sauna preferences, and make sure everything is considered for a flawless delivery. Book a planning session now.

Gallery
Best Price Guaranteed
At Sauna Marketplace, we always offer the best service, support, and expertise. But that doesn't mean you should pay more! Place your order knowing that if you find a better deal published from another authorized dealer, we'll refund the difference. Valid until your order leaves the warehouse.

Thermory Square No 45 | One-Person Outdoor Sauna Kit

The most compact, practical 1-person outdoor sauna kit we’ve ever seen.  Thermory Square No 55 redefines what’s possible for a small sauna.  This sauna can last a lifetime with thermally modified Nordic Spruce wood that resists warping, cracking, decay that degrades standard outdoor sauna kits.

Build Your Quote:

$4,980.00

Fulfillment Partner:

We partner with distributors and manufacturers who guarantee the lowest prices, fastest delivery, and additional 'whatever-it-takes' support. 

ThermoryUSA
Zero Interest Payments:

Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

Pay with HSA/FSA:

We teamed up with FLEX to make HSA/FSA payments easier than ever.

Extend your entertainment area with the ultimate relaxation destination. The Thermory 45 Series square can bathe one to two people in heat and steam. It’s small footprint and efficient design make it perfect for those with limited space, offering a spa-like escape in the comfort of your home. Plus, the 45 comes with a rain jacket for all-weather protection.

Specs:

Length:4.6′Back Bench Length:3.9′
Width:4.4′Back Bench Width:1.66′
Height:7.28′Volume:98 CU. FT.
Window:N/AHeater:5KW
Side Bench Length:2.0′Board Thickness:1.57″
Side Bench Width:0.91′
Thermory Square 40 41 42 43 44 and 45 Options and Specs

No45 Sauna Square

A personal wellness retreat, beautifully designed for limited spaces.

The No45 Sauna Square brings the traditional Finnish sauna experience to your home in a compact, elegant package. Crafted with Thermory's premium thermally modified wood, this freestanding sauna fits perfectly on balconies, porches, or garden spaces, offering a private sanctuary wherever you need it most.

Design

Compact Luxury

The No45 features clean, modern lines and a panoramic window that creates an open, airy feel while maintaining privacy. The thermally modified Thermo-Spruce exterior and Thermo-Aspen interior not only provide beauty but exceptional durability against the elements.

Perfect for Small Spaces

With dimensions of just 55.5" × 52.4" × 87.4" (L × W × H), the No45 Sauna Square is our smallest sauna, designed specifically for limited spaces without compromising on the authentic sauna experience.

Features

Space-Efficient Design - Fits perfectly in smaller areas like balconies and porches.

Quick Assembly - Easy to set up, bringing the sauna experience to your home faster.

Energy Efficient - Designed to maintain heat effectively, reducing operational costs.

Built for Two - Comfortably accommodates 1-2 people with thoughtfully designed interior benches.

Homecraft Revive Slim 5kW Heater.  Want to push temps into the 190°s and beyond?  Consider a HUUM STEEL Mini or HUUM CLIFF Mini.  

Powerful heating in a compact design, perfect for quickly reaching optimal sauna temperatures.

Premium Weather Protection - Included PVC rain jacket with trim provides additional protection in wet weather conditions.

DIY Friendly - All Thermory Squares are designed for easy DIY assembly with 1-2 people in a day.  Want to have it built for you?  Contact Sauna Marketplace to see if we have builder in your area.  

Specifications

Dimensions

Exterior (L × W × H): 55.5" × 52.4" × 87.4"
Interior: 31.5" × 24.5" × 11"
Door: 47.5" × 20"
Wall Thickness: 1.575"
Packing Dimensions (H × W × L): 31.1" × 43.5" × 82.3"
Volume: 98 Cubic Ft

Materials

Exterior: Thermally modified Thermo-Spruce
Interior, Flooring & Benches: Thermally modified Thermo-Aspen

Technical

Heater: Homecraft Revive Slim 5kW
Weight: 1000 lbs
Shipping Weight: 992 lbs
Assembly: DIY installation (guide included)

Included Components

Manuals
Cradles
Body staves
Wall panels
Panoramic window
Wooden trims
Glass front door with handle
Front panels with glass
Interior benches
Backrest staves
Duckboard flooring
Fasteners
Metal bands
Porch benches
PVC rain jacket with trim

Durability

Your Thermory Sauna Square's thermally modified wood is built to withstand the elements for up to 25 years. The included rain jacket provides additional coverage in wet weather, ensuring your sauna remains beautiful for years to come.

Warranty & Shipping

2-Year warranty
Ships palleted via LTL freight
DIY Friendly, ask about the Sauna Marketplace Builder Network to have it built for you.

Why No45 Sauna Square?

Experience the ultimate in personal wellness with the No45 Sauna Square. Its small footprint and efficient design make it perfect for those with limited space, offering a spa-like escape wherever you need it most.

Specs
DIY Friendly DIY Friendly Saunas means a professional is not required for the build. Basic tools like a drill, hammer, and level are typically required. With Sauna Marketplace, you do not risk your warranty by assembling a sauna yourself. If you prefer a professional installation, please reach out to the Sauna Marketplace team so we can check for a trusted installer near you.

Yes

*An electrician is still required for all electrical work!
Exterior Shortest Side (in)

53

Exterior Height (in) Maximum exterior height from earth to roof peak

87

Exterior Longest Side (in) Maximum Exterior Length of the longest side when assembled.

56

Exterior Materials

Thermally Modified Spruce

Thermal Modification of wood is a natural process using heat and steam in a vacuum to alter wood at a cellular level. When done right, it makes the wood significantly more durable, stable, and longer lasting. Thermo-Spruce is darker than raw spruce wood, closer in color and performance to Western Red Cedar.
Insulation

Single Layer of Wood

While the R-Value is much lower than an insulated wall, saunas made with a single layer of wood have good thermal mass and can easily dry to the interior and exterior.
Made in

Across the Gulf of Finland, Estonia has a vibrant and growing sauna industry. They're known for innovative design, modern manufacturing, and premium sauna products at an affordable price.
Wi-Fi Option

Yes

Warranty

5

Shipping Method

LTL Curbside Delivery w/ Lift Gate Service

Our shipping partners will deliver your sauna curbside. They are not responsible for moving it into the garage or final location but you might get lucky. Please contact Sauna Marketplace to plan for a smooth delivery and installation.
People

1

,

2

Model

Mini Square

Attachments

Video Attachments

Planning Session

We'd love the opportunity to answer your questions, learn about your sauna preferences, and make sure everything is considered for a flawless delivery. Book a planning session now.

Gallery
Best Price Guaranteed
At Sauna Marketplace, we always offer the best service, support, and expertise. But that doesn't mean you should pay more! Place your order knowing that if you find a better deal published from another authorized dealer, we'll refund the difference. Valid until your order leaves the warehouse.