Installation and Operation Manual
Step-by-step installation, homeowner operation, and FERO 9 kW heater wiring guide for the 6-Person C2 outdoor sauna.
Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.
That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.
We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.
| Color | Douglas Fir, Weathered Grey Spruce |
|---|---|
| People | 6 |
| KW | 9 |
| Exterior Materials | Douglas Fir or Weathered Grey Spruce |
| Interior Materials | Scandinavian Spruce |
| Model | C2 |
| Maximum Roof Envelope | Douglas Fir: 116-11/16 × 108-15/16 × 90-7/16 in., Weathered Grey Spruce: 116-1/8 × 108-1/4 × 90-7/16 in. |
| Cabin Body Footprint | Douglas Fir: 99-15/16 × 92-1/4 in., Weathered Grey Spruce: 101-7/8 × 94-1/16 in. |
| Interior Usable Size | 90.6 × 82.7 × 78.9 in. |
| Electrical Service | 220–240V, 50A, 50/60Hz dedicated Class A GFCI |
| Connection | Site NEMA 14-50R; sauna SS2-50P inlet; lockable adapter cord not included |
| Glass | 5/16-in tempered entry door; insulated double-pane windows |
| Insulation | 2-1/8-in mineral-wool walls; two-layer mineral-wool roof with air gap and EPDM |
| Installation | Professional installation recommended; minimum two people; licensed electrician required |
| Warranty Scope | 5-year limited normal residential use for original purchaser; accessories 1 year; terms apply |
Step-by-step installation, homeowner operation, and FERO 9 kW heater wiring guide for the 6-Person C2 outdoor sauna.
Spec sheet for the 6-Person C2: dimensions, electrical (50A NEMA SS2-50P), weight, and material details.
Pre-delivery prep checklist: pad load rating, freight access, electrical, eaves clearance, and outdoor install prep.
5-year limited residential warranty for Kohler saunas. US and Canada only.
Room to turn the corner. The six-person C2 is the only size in this family with an L-bench program, so it is the choice for the largest social layout rather than simply a wider version of the smaller cabin. Choose Douglas Fir or Weathered Grey Spruce outside; both keep Scandinavian spruce and obeche contact surfaces inside. The included FERO 9.0 kW heater, integral floor, insulated roof, and exact official-source 3D configurator make it a strong fit for larger households, guests, and an L-bench outdoor sauna room. Available to order; confirm current inventory and delivery timing for your ZIP before purchase.
$38,700.00 – $40,000.00Price range: $38,700.00 through $40,000.00
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3-person · 5-person · 6-person (current)
The C2 is Kohler’s freestanding outdoor sauna. This 6-person cabin has lower, upper, and side benches in an L layout with rear and side backrests. Douglas Fir gives the exterior a warmer horizontal-wood character. Weathered Grey Spruce uses a cooler grey exterior, while the sauna room remains Scandinavian spruce with solid obeche seating and contact surfaces.
The extended roof is wider and deeper than the wall body, so one mixed “overall” number can create a costly site mistake. Use the maximum roof envelope for collision and space planning, the body footprint for the base, and the interior dimensions for the room you sit in.
| Configuration | Maximum roof W × D × H | Cabin body W × D | Interior W × D × H | Net / shipping weight |
|---|---|---|---|---|
| Douglas Fir K-39189-1FNC-DFS |
116-11/16 × 108-15/16 × 90-7/16 in. | 99-15/16 × 92-1/4 in. | 90.6 × 82.7 × 78.9 in. | 2,756 lb. / 3,506 lb. |
| Weathered Grey Spruce K-40046-1FNC-WGS |
116-1/8 × 108-1/4 × 90-7/16 in. | 101-7/8 × 94-1/16 in. | 90.6 × 82.7 × 78.9 in. | 2,911 lb. / 3,660 lb. |
6-person planning note: Kohler’s current Weathered Grey product drawing gives the 116-1/8 × 108-1/4-inch roof envelope above, while its current CAD file is about 0.6 inch larger in both directions. Reserve at least 117 × 109 × 91 inches before adding working, service, or code clearances, and verify the final order documents before site construction.
Kohler publishes a 158–176°F operating range. The door may be locked only when the cabin is not in use. A qualified electrician and the exact model manual control the final electrical work.
The panel system includes its floor and insulated roof with EPDM membrane. It also includes the model-specific benches and backrests, one headrest, one stool, heater and stones, controls, lighting, thermometer, 20-minute beech sand timer, door and windows, handles and hinges, ground nails, rubber plates, assembly hardware, and installation manual. The site circuit, receptacle, power cord, concrete pavers, concrete anchors, and site work are not included.
Curbside delivery is included with the cabin. The optional Sauna Marketplace white-glove service covers delivery to the prepared location, cabin assembly, a function check, and packaging removal. Site preparation, foundation work, engineering, electrical work, ventilation changes, and cosmetic or finish work are separate. Confirm access and service coverage before scheduling.
Keep debris and standing water off the roof, keep the rear exhaust clear, and remove roof snow after accumulation exceeds 20 inches (50 cm). Inspect the exterior cladding twice each year and replace damaged boards. Never hose or pressure-wash the interior, benches, or seats. Follow the operating guide for cleaning, stone inspection, electrical checks, and periods of non-use.
Kohler’s limited warranty covers the sauna for five years from purchase or later delivery during normal residential use by the original purchaser in the United States or Canada. Included and separately purchased sauna accessories carry one year. Commercial application voids the warranty, and labor, removal, reinstallation, electrician costs, stones, weathering, and other exclusions apply. Read the attached warranty for full terms.
This configuration is available to order. Confirm current inventory and delivery timing for your ZIP before purchase; the unmanaged website stock flag is not a physical on-hand quantity.
The 3D configurator below is powered by SaunaDesignPro and starts from the current official Kohler geometry for all six C2 size-and-finish combinations. Use it to compare the full exterior, interior bench layout, roof envelope, and selected finish. The yard preview is a planning aid, not measured AR; verify the physical site and every clearance before construction.
If you want a second set of eyes on the pad, electrical plan, access, or delivery choice, call Ben² at (844) 565-1113 before the cabin ships.
Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.
That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.
We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.
| Color | Douglas Fir, Weathered Grey Spruce |
|---|---|
| People | 6 |
| KW | 9 |
| Exterior Materials | Douglas Fir or Weathered Grey Spruce |
| Interior Materials | Scandinavian Spruce |
| Model | C2 |
| Maximum Roof Envelope | Douglas Fir: 116-11/16 × 108-15/16 × 90-7/16 in., Weathered Grey Spruce: 116-1/8 × 108-1/4 × 90-7/16 in. |
| Cabin Body Footprint | Douglas Fir: 99-15/16 × 92-1/4 in., Weathered Grey Spruce: 101-7/8 × 94-1/16 in. |
| Interior Usable Size | 90.6 × 82.7 × 78.9 in. |
| Electrical Service | 220–240V, 50A, 50/60Hz dedicated Class A GFCI |
| Connection | Site NEMA 14-50R; sauna SS2-50P inlet; lockable adapter cord not included |
| Glass | 5/16-in tempered entry door; insulated double-pane windows |
| Insulation | 2-1/8-in mineral-wool walls; two-layer mineral-wool roof with air gap and EPDM |
| Installation | Professional installation recommended; minimum two people; licensed electrician required |
| Warranty Scope | 5-year limited normal residential use for original purchaser; accessories 1 year; terms apply |
Step-by-step installation, homeowner operation, and FERO 9 kW heater wiring guide for the 6-Person C2 outdoor sauna.
Spec sheet for the 6-Person C2: dimensions, electrical (50A NEMA SS2-50P), weight, and material details.
Pre-delivery prep checklist: pad load rating, freight access, electrical, eaves clearance, and outdoor install prep.
5-year limited residential warranty for Kohler saunas. US and Canada only.
Interactive Kohler C2 outdoor showroom
Compare all three C2 footprints and both exterior finishes, inspect the interior, confirm scale in your own photo, and add the exact sauna and delivery choice to your cart.
3D experience by SaunaDesignPro
Local Bench Time and Sales