Finnmark Designs FD-4 Trinity Infra-Steam Sauna
Finnmark Designs indoor saunas · Saunas inferred
$7,795 at Nordica Sauna · checked Oct 7, 2026
Finnmark Designs FD-4 Trinity Infra-Steam Sauna is a sauna from Finnmark Designs indoor saunas. It uses electric heat, seats up to 2, and is rated to reach 170 °F. Lowest in-stock price on file: $7,795 at Nordica Sauna (checked Oct 7, 2026).
| Category | Saunas |
|---|---|
| Model / SKU | — |
| Heat ? | electricsaunakits.com |
| Setting | — |
| Shape | — |
| Seats | 2saunakits.com |
| Outside size (L×W×H) ? | — |
| Inside size (L×W×H) | 45.1 × 44.5 × 75.2 insaunakits.com |
| Weight | 437 lbsaunakits.com |
| Power ? | — |
| Voltage ? | 120saunakits.com |
| Circuit ? | 15 Asaunakits.com |
| Plugs in ? | yessaunakits.com |
| Top temperature (claimed) ? | 170 °Fsaunakits.com |
| Heater | — |
| Heater included in the price ? | — |
| Wood ? | — |
| Thermally modified wood ? | — |
| Wall / stave thickness ? | — |
| Arrives ? | — |
| Electrical safety listing ? | — |
| Warranty: cabin | — |
| Warranty: heater | — |
| Sold as | Single product |
| Availability | Sold by several retailers |
Where to buy
Prices are re-checked every week. A date more than a month old means the store could not be re-read, so the price may have moved.
A struck-through price is the store's own "was" figure, recorded as shown; the price history below says how long it has stood.
Accessories made for this model
Named for this model by the seller. Items that fit any sauna (stones, buckets) are not listed here.
- Finnmark Designs FD-4 Waterproof Sauna Cover · weather cover · $1,298
Price history
Price tracking for this product began October 7, 2026. Prices are re-checked every week, and the chart fills in from the next check.
Every recorded price change (1)
A row is recorded only when a store's price or stock changes; each line then runs to the date the store was last checked. Amazon prices aren't shown (store policy).
Where this came from
inferred Read from brand or store pages, but at least one value rests on a search result, a figure worked out from the source's own numbers, or a product with no part number to pin it to. Last verified 2026-10-07. What the labels mean.
The equivalent in other lines
Same category, different brand. Open any of them side by side with this sauna, or tick several to compare up to four.
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