See it at Finnmark Designs: FD-3 Full Spectrum Infrared Sauna
Finnmark Designs' own page for the FD-3 Full Spectrum Infrared Sauna. Not a paid link.
FD-3 Full Spectrum Infrared Sauna vs Reserve Edition 4 Person (GDI-8040-03)
Finnmark Designs FD-3 Full Spectrum Infrared Sauna and Golden Designs Reserve Edition 4 Person (GDI-8040-03), compared on the figures their makers publish. Both are full-spectrum infrared saunas, and the seat counts their makers publish overlap.
The makers' figures side by side
| Specification | Finnmark Designs FD-3 Full Spectrum Infrared Sauna | Golden Designs Reserve Edition 4 Person (GDI-8040-03) |
|---|---|---|
| Indoor or outdoor | — | Indoor Use Only |
| Seats (maker's rating) | SEATS 3-4 | 4 Person capacity |
| Outside dimensions | 70.9" W x 45.3" D x 78.3" H | 70″ x 41″ x 75″ (roof overhang: adds 5″ to depth) |
| Inside dimensions | 67.2" W x 41.6" D x 70.5" H | 64″ x 34″ x 68″ |
| Wood | Clear "A" grade Canadian Western Red Cedar interior. Thermal Plus™ Canadian Aspen exterior. | Natural Reforested Canadian Hemlock Wood Construction |
| Electrical supply | | 240V | 3150 watts | 15 amps | Plugs into a 240v 15a outlet | Plug type: NEMA 6-15P | Dual x 120v/15 AMP Non GFCI (Recommend Dedicated Outlet) (Please consult a certified electrician.) |
| Weight | — | 475 lbs |
| Rated temperature | Max Temperature = 170° F | 118F-132F is the deal temperature range, sauna can heat up to 140F |
| Infrared emitters | (4) Spectrum Plus™ dual wave (far and mid) on back wall, (1) under bench and (2) on front wall. (2) Spectrum™ Carbon far infrared on each sidewall. | 9 Total Heaters, 3 PureTech™ FAR IR Carbon Panels, 6 Near IR Elements. |
| Warranty | 10-Year Sauna Warranty. Our Spectrum Plus™ Incoloy heaters have a unconditional lifetime warranty. | — |
| Price on the maker's site | — | $7,999 (goldendesigninc.com, 29 Sep 2026) |
Each figure is the maker's own, as cited row by row on the FD-3 Full Spectrum Infrared Sauna and Reserve Edition 4 Person (GDI-8040-03) pages and listed in the sources below. A dash means the figure is not on the maker pages we cite. Figures marked "about" are Saunakivi's unit conversions of the maker's figure.
Where to buy
Finnmark Designs FD-3 Full Spectrum Infrared Sauna
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Golden Designs Reserve Edition 4 Person (GDI-8040-03)
Paid links · how this works
Buy from Golden Designs: Reserve Edition 4 Person (GDI-8040-03)
Golden Designs' own page for the Reserve Edition 4 Person (GDI-8040-03). Not a paid link.
Where the published figures differ
- Seats (maker's rating): FD-3 Full Spectrum Infrared Sauna: SEATS 3-4. Reserve Edition 4 Person (GDI-8040-03): 4 Person capacity.
- Outside dimensions: FD-3 Full Spectrum Infrared Sauna: 70.9" W x 45.3" D x 78.3" H. Reserve Edition 4 Person (GDI-8040-03): 70″ x 41″ x 75″ (roof overhang: adds 5″ to depth).
- Inside dimensions: FD-3 Full Spectrum Infrared Sauna: 67.2" W x 41.6" D x 70.5" H. Reserve Edition 4 Person (GDI-8040-03): 64″ x 34″ x 68″.
- Wood: FD-3 Full Spectrum Infrared Sauna: Clear "A" grade Canadian Western Red Cedar interior. Thermal Plus™ Canadian Aspen exterior. Reserve Edition 4 Person (GDI-8040-03): Natural Reforested Canadian Hemlock Wood Construction.
- Electrical supply: FD-3 Full Spectrum Infrared Sauna: | 240V | 3150 watts | 15 amps | Plugs into a 240v 15a outlet | Plug type: NEMA 6-15P. Reserve Edition 4 Person (GDI-8040-03): Dual x 120v/15 AMP Non GFCI (Recommend Dedicated Outlet) (Please consult a certified electrician.).
- Rated temperature: FD-3 Full Spectrum Infrared Sauna: Max Temperature = 170° F. Reserve Edition 4 Person (GDI-8040-03): 118F-132F is the deal temperature range, sauna can heat up to 140F.
- Infrared emitters: FD-3 Full Spectrum Infrared Sauna: (4) Spectrum Plus™ dual wave (far and mid) on back wall, (1) under bench and (2) on front wall. (2) Spectrum™ Carbon far infrared on each sidewall. Reserve Edition 4 Person (GDI-8040-03): 9 Total Heaters, 3 PureTech™ FAR IR Carbon Panels, 6 Near IR Elements.
Figures we cite for only one of the two: indoor or outdoor (only Golden Designs's cited pages give it); weight (only Golden Designs's cited pages give it); warranty (only Finnmark Designs's cited pages give it); price on the maker's site (only Golden Designs's cited pages give it). Ask the other maker before treating the two as equal on those points.
Read each one in full
Finnmark Designs FD-3 Full Spectrum Infrared Sauna
Finnmark Designs · seats 3–4 · full-spectrum infrared sauna · 240 V supply
Golden Designs Reserve Edition 4 Person (GDI-8040-03)
Golden Designs · seats 4 · full-spectrum infrared sauna · for indoor use · 120 V supply
Sources
- FD-3 Full Spectrum Infrared Sauna - Finnmark Designs — Finnmark Designs
- Finnmark Designs infrared sauna warranty — Finnmark Designs
- Reserve Edition 4 Person (GDI-8040-03) - Golden Designs — Golden Designs