Thermory No 45 Square Sauna
Thermory No 45 Square Sauna is backordered and will ship as soon as it is back in stock.
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- Model: No 45 Square Sauna
- Sustainably sourced Northern European spruce features a brushed texture, distinct knots, and consistent heartwood color
- Unrivaled rot- and moisture-resistance with exceptional stability and durability
- Superior insulating properties keep you surrounded with even heat distribution
- Intuitively engineered for simple DIY installation
- 1-2 Person Outdoor Sauna
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Thermory No 45 Square Sauna
- Occupancy: 1-2 Persons
- Product Weight: 992 lbs
- Length: 4.6 ft
- Width: 4.4 ft
- Height: 7.28 ft
- Volume: 98 cu. ft
- Back Bench: 3.9 ft (L) x 1.66 ft (W)
- Side Bench: 2.0 ft (L) x 0.91 ft (W)
- Board Thickness: 1.57 in
- Windows: None (full tempered-glass front)
- Material: Thermally Modified Nordic Spruce
- Recommended Heater: 5kW (sold separately)
- 1-2 Person Capacity: Ideal for individuals or couples
- Compact Footprint: 4.6 ft x 4.4 ft — fits sites where a full-size cabin won't
- Tempered Glass Front: Enhances light and visual openness
- Solid Back and Side Walls: Increased privacy and improved thermal retention
- Thermally Modified Nordic Spruce: Naturally durable, stable, and richly textured
- Eco-Friendly Construction: Sustainably harvested spruce with a brushed surface
- Smooth, Rounded Edges: Luxurious and cool to the touch
- Efficient Insulation: Creates a consistent, enveloping heat environment
- Modest Power Draw: Runs on a 5kW heater (sold separately)
- DIY Assembly: Designed for easy self-installation (heater not included)
- Manuals
- Cradles
- Body staves
- Wall panels
- Wooden trims
- Glass front door with handle
- Front panels with glass
- Interior benches
- Backrest staves
- Duckboard flooring
- Fasteners
- Metal bands
- PVC rain jacket with trim
Heater sizing for this sauna
Sized to this sauna’s interior volume, and matched to how the heater mounts.
- Interior volume
- 126.0 cu ft
- Outdoor, cold climate · 50%
- +63.0
- Effective volume
- 189 cu ft
Worked out from this sauna’s published dimensions, wall to wall, with any porch excluded. This sauna takes a wall-mounted heater, so floor-standing series are left out.
Our recommendation
3.5 kW
HUUM CLIFF Mini
At 189 cubic feet this is the size we would put in. It sits high in its rated range, so allow a longer warm-up.
Thermory recommends 5 kW for this sauna.
Heaters that fit this sauna
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Recommended
HUUM CLIFF Mini
3.5 kW · rated 123.0–212.0 cu ft
Wall-mount · breaker not published
Top of its range
From $3,385
Complete package with UKU Local Black
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HUUM STEEL Mini
3.5 kW · rated 123.0–212.0 cu ft
Wall-mount · breaker not published
Top of its range
From $2,394
Complete package with UKU Local Black
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HUUM DROP
6.0 kW · rated 177.0–353.0 cu ft
Wall-mount · 30 A breaker · 10 AWG
From $2,888
Complete package with UKU Local Black
One heater per series, at the size that suits this sauna — open any of them to see the rest of the range. 1 other series make a heater for this volume, but it mounts the wrong way for this sauna. Sizing is a starting point, not an installation specification: confirm the output, the mounting and the electrical requirement against the heater’s own manual and a licensed electrician before you buy.
Smart shape. Sweeping views.
Nordic spruce gets a fresh look in a square silhouette with curved contours. Take in the view from the full tempered-glass front of your Thermory Sauna Square while you rest your feet on the tiered bench. Go ahead, stay awhile.
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The most spacious
The height and width of our squares give you seven feet of headroom and deep benches to sit or fully recline.
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The most durable
Thermally modified Nordic spruce never shrinks for unmatched durability and stability, along with 25 years of proven rot resistance.
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The most comfortable
Unlike cedar, which can become rough, our Nordic softwood is milled to give you the smoothest surface that’s never too hot.
Take the next step
Thermory Saunas are the only thermally modified saunas in North America. So, you get the beauty of real wood, naturally enhanced with only heat and steam for unequaled durability and stability. And your sauna never shrinks—even in changing weather conditions. Cedar can’t say that.
