Make room for a quiet pause at home with the Carbon Smart 6 × 10 × 8 ft indoor sauna kit by Finnish Sauna Builders. Thermo Poplar wall, ceiling, and bench components bring a coordinated wood interior to a prepared room, while selectable bench upgrades and heater packages let you shape the project around your plans. This is an interior kit, not a freestanding cabin: framing, insulation, electrical wiring, and exterior wall covering are buyer-provided.
Why Customers Choose This Product
Product Highlights
A Coordinated Thermo Poplar Interior
The listing specifies thermally modified poplar for wall and ceiling boards, benches, moldings, and walk-area duckboards. Its warm wood finish gives the room a cohesive appearance; natural color and grain can vary.
Plan the Bench Layout
Listed clear 1 × 4 bench boards and supports provide a 20-inch-deep bench specification for the selected layout. Finalize dimensions, seating arrangement, supports, and load limits before fabrication.
Choose Your Finishing Package
Select No Accessories, Bench Skirting, LED Under Bench Lighting, or the Luxury Package combining skirting and LEDs. These are optional upgrades, separate from the standard kit components below.
Built-In or Wi-Fi Package Choices
The Harvia Cilindro PC90 selection lists built-in controls. PC90E, Virta, EOS Cubo Avantgarde, and EOS Mythos S35 selections are labeled Wi-Fi packages; confirm the exact external controls, connectivity equipment, and safety components included.
Interior Components in One Order
The kit lists boards, door, backrests, vents, duckboards, sauna accessories, and a wall light. Confirm a final component schedule against your measured room so you can coordinate construction and installation separately.
Specifications
- Brand/vendor: Finnish Sauna Builders.
- Product line: Carbon Smart.
- Type: custom indoor sauna interior kit.
- Nominal room size: 6 × 10 × 8 ft; confirm finished dimensions and measurement basis.
- Wood selection: Thermo Poplar only.
- Wall and ceiling boards: listed 1 × 4 tongue-and-groove Thermo Poplar.
- Bench boards: clear 1 × 4 Thermo Poplar with supports; listed depth 20 in.
- Door frame: 27.2 × 78.7 in (690 × 2000 mm, as listed).
- Door glass: 24.4 × 77.3 in (620 × 1963 mm, as listed).
- Frame cross-section: 1.65 × 3.6 in (42 × 92 mm, as listed).
- Listed door rough opening: 28 × 80 in; verify drawings before framing.
- Recommended ceiling height: 8 ft as listed; confirm exact heater requirements.
Standard Components Listed
- Foil vapor barrier.
- Backrests, shipped flat.
- Thermo Poplar wall and ceiling boards.
- Thermo Poplar bench boards and supports for the agreed layout.
- Thermo Poplar corner moldings for walls, ceiling, and baseboards.
- All-glass sauna door with wood handles and trim.
- Thermo Poplar duckboards for the walk area.
- Upper and lower vent grilles.
- Bucket with liner and ladle.
- Thermometer and headrest.
- Wall-mounted sauna light, described as marine-grade and vapor-proof; verify installation requirements.
- Installation instructions.
| Selection | Listed power | Controls and inclusions |
|---|---|---|
| No Heater | Not applicable | No heater package; heater stones not established for this selection |
| Harvia Cilindro PC90 | 9kW | Built-in controls and heater stones; no Wi-Fi listed |
| Harvia Cilindro PC90E | 9kW | Wi-Fi package and heater stones |
| Harvia Virta | 9kW | Wi-Fi package, heater stones, and railing |
| EOS Cubo Avantgarde | 9kW | Wi-Fi package and heater stones |
| EOS Mythos S35 | 9kW | Wi-Fi package and heater stones |
Confirm exact model suffixes, controllers, power equipment, sensors, stone quantities, voltage, phase, and package contents. A Wi-Fi package label does not establish built-in connectivity or that every installation component is included. A 9kW listing alone does not establish room compatibility or heat-up time.
Ideal For
- Indoor sauna projects with separately prepared framing and insulation.
- Buyers seeking a coordinated Thermo Poplar interior.
- Homeowners comparing built-in controls with optional Wi-Fi packages.
- Contractors coordinating custom benches, electrical work, and ventilation.
Important Information
- Buyer provides framing, insulation, electrical wiring, and exterior wall covering. Confirm additional floor, substrate, moisture-protection, ventilation, and room-preparation requirements with the installer.
- Approve final measurements, bench layout, component quantities, and door drawings before fabrication. Nominal dimensions do not establish finished interior size or a seating capacity.
- The listed enclosure component is an all-glass door, not a full glass wall. Reference depictions of a glass wall do not establish inclusion.
- Backrests ship flat. Angled mounting requires onsite spacers.
- Boards are described as normally horizontal, with an interior seam where room width exceeds 8 ft. Confirm board orientation and seam placement for the 6 × 10 ft room.
- No Heater excludes a heater package. Bench skirting and under-bench LEDs depend on the selected upgrade; confirm the final order schedule.
- A qualified installer should verify effective room volume, insulation, glazing, ventilation, heater mounting, required guards, and clearances against the exact heater manual. A package without a listed railing may still require guarding.
- Have a qualified electrician confirm voltage, phase, circuit sizing, grounding, controls, sensors, and lighting requirements. Plug-in installation is not established.
- For Wi-Fi packages, confirm required controllers, connectivity accessories, and remote-start safeguards. Follow manufacturer activation and inspection instructions before remote heating.
- Follow manufacturer temperature, session-length, age, supervision, hydration, and hot-surface instructions. Avoid use while impaired by alcohol or drugs and keep objects clear of the heater.
- Carbon Smart identifies the product line here. No quantified carbon reduction, carbon-neutral status, forestry certification, guaranteed sustainability outcome, medical benefit, or energy saving is established by this listing.
- The kit is described for indoor use. Outdoor suitability and commercial approval are not established; confirm intended use and site requirements before ordering.
- Request current assembly, heater, controller, and lighting manuals. Confirm freight charges, delivery timing, access and unloading, installation labor, warranty, returns, and custom-order conditions before purchase.
Frequently Asked Questions
Is this a complete freestanding sauna cabin?
No. This is an indoor interior kit for a prepared room. Framing, insulation, electrical wiring, and exterior wall covering are buyer-provided, along with any additional preparation required by the agreed design and manuals.
Which wood and accessory upgrades are available?
Thermo Poplar is the only listed wood selection. Choose No Accessories, Bench Skirting, LED Under Bench Lighting, or the Luxury Package combining skirting and LEDs. These upgrades are separate from standard kit accessories.
Which heater options are listed?
Choose No Heater or five listed 9kW packages: Harvia Cilindro PC90 with built-in controls, Harvia Cilindro PC90E Wi-Fi, Harvia Virta Wi-Fi, EOS Cubo Avantgarde Wi-Fi, or EOS Mythos S35 Wi-Fi. Heater packages list stones; Virta also lists a railing. Confirm exact components and room suitability.
Does Carbon Smart mean the kit is certified carbon-neutral?
No carbon-neutral certification or quantified carbon reduction is established by the listing. Carbon Smart is used as the product-line name; request supporting documentation for any specific environmental claim before relying on it.
What should I confirm before ordering?
Confirm measured room dimensions, ceiling height, door opening, bench configuration, board seams, component schedule, heater and control models, electrical and ventilation plans, installation responsibilities, freight arrangements, warranty, and custom-order terms.
Select your accessory and heater package, then finalize the measured room and bench plan. Confirm construction requirements, electrical preparation, and delivery arrangements before ordering your Carbon Smart sauna kit.
For recreational relaxation only, not intended to diagnose, treat, cure, or prevent disease. Consult a qualified healthcare professional before sauna use if pregnant, taking medication, or managing a health condition.
