# Thermory Large Square Sauna No. 40 – Natural (With Window)

> Thermory Large Square Sauna No. 40 – Natural (With Window) is a large sauna from Thermory outdoor saunas. It uses electric heat, is built for outdoor use, seats up to 4, and measures 98.88 × 82.8 × 86.52 in outside (L × W × H). Lowest in-stock price on file: $9,477 at SaunaPlace (checked Oct 7, 2026).

- Line: [Thermory outdoor saunas](https://saunagrid.com/lines/thermory-outdoor/)
- Category: [Saunas](https://saunagrid.com/compare/sauna/)
- Size tier within its line: large
- Status: current
- Data confidence: inferred (last verified 2026-10-07; [what this means](https://saunagrid.com/how-we-compare/#confidence))
- Page: https://saunagrid.com/products/thermory-outdoor-large-square-no-40-natural-window/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model / SKU | not published |  |
| Heat | electric | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Setting | outdoor | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Shape | not published |  |
| Seats | 4 | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Outside size (L×W×H) | 98.88 × 82.8 × 86.52 in | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Inside size (L×W×H) | not published |  |
| Weight | not published |  |
| Power | not published |  |
| Voltage | not published |  |
| Circuit | not published |  |
| Plugs in | not published |  |
| Top temperature (claimed) | not published |  |
| Heater | not published |  |
| Heater included in the price | not published |  |
| Wood | spruce | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Thermally modified wood | yes | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Wall / stave thickness | 1.57 in | [saunaplace.com](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) (retailer, page, 2026-10-07) |
| Arrives | not published |  |
| Electrical safety listing | not published |  |
| Warranty: cabin | not published |  |
| Warranty: heater | not published |  |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| SaunaPlace | $9,477 | in stock | 2026-10-07 | [View at SaunaPlace](https://www.saunaplace.com/products/thermory-square-sauna-no-40-with-wide-back-window) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The equivalent in other lines

Same category, same size tier (large), different line:

- [Almost Heaven Appalachia 6 Person Cabin Sauna (electric)](https://saunagrid.com/products/almost-heaven-outdoor-appalachia-6-person-cabin-electric/) — $12,650
- [Almost Heaven Appalachia 6 Person Cabin Sauna (wood-fired)](https://saunagrid.com/products/almost-heaven-outdoor-appalachia-6-person-cabin-wood/) — $16,934
- [Almost Heaven Hinton 2-3 Person Infrared Sauna](https://saunagrid.com/products/almost-heaven-infrared-hinton-2-3-person/) — $6,840
- [Almost Heaven Tyrol Indoor Sauna, Large 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-tyrol-large-4-5-person/) — $6,792
- [Almost Heaven Tyrol Indoor Sauna, Large View 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-tyrol-large-view-4-5-person/) — $9,431
- [Almost Heaven Himalaya Salt Indoor Sauna, Corner 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-himalaya-salt-corner-4-5-person/) — $9,712
- [Almost Heaven Himalaya Salt Indoor Sauna, Large 6 Person](https://saunagrid.com/products/almost-heaven-indoor-himalaya-salt-large-6-person/) — $9,743
- [Almost Heaven Timberline Outdoor Sauna, Large (Yukon) 4-5 Person (electric)](https://saunagrid.com/products/almost-heaven-outdoor-timberline-large-yukon-4-5-person-electric/) — $17,354


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SaunaGrid lists home saunas from every brand side by side, with a source for every spec and a date on every price. [How we compare](https://saunagrid.com/how-we-compare/). Data as of 2026-10-10.