Carbon Smart Finnish Sauna Room | 4' x 5'
Freight Delivery $950
Flat-rate freight to the contiguous US. The carrier will call to schedule curbside delivery with liftgate service.
30-Day Returns
Standard 30-day return policy after delivery, subject to terms.
Speak to an Expert
Call 954-674-8133 for sizing advice and quotes.
Shipping & Returns
We ship within the contiguous United States only (not Alaska or Hawaii). Depending on the product, shipping is either free or offered at a flat rate. Large items ship via freight, and flatbed delivery may involve additional shipping terms. Please inspect your delivery for damage and contact us with photos right away if you spot any. Once your order has entered production it can no longer be cancelled. Our standard 30-day return policy applies after delivery, subject to the applicable terms and conditions. If an item is shipped to a location unable to accept delivery, you will be responsible for arranging pickup from the carrier's terminal, along with any applicable storage, redelivery or other associated fees.
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The Finnish Sauna Builders Carbon Smart™ 4' × 5' × 8' Indoor Sauna Room Kit elevates the personal home sauna experience with just enough additional depth to accommodate a full-length bench — transforming the intimate two-person format into a genuinely comfortable reclined sauna session for one, or an upright session for two. This is the kit for the wellness-minded homeowner who wants full therapeutic benefit without sacrificing a significant portion of their interior floor plan.
Built in Thermo Poplar and engineered to Finnish Sauna Builders' exacting standards, the 4' × 5' Carbon Smart™ kit installs cleanly into bathrooms, basements, or dedicated wellness rooms with the modular precision that makes this collection the benchmark for residential indoor sauna kits in North America. At this size, the Harvia KIP 4.5KW WiFi heater provides the ideal heat output — and the optional bench skirting delivers the finished, spa-grade interior appearance that completes the luxury wellness experience.
Key Features
- Depth Advantage: 4' × 5' footprint adds meaningful bench depth over the 4' × 4' — enabling fully reclined sauna sessions
- Wood Options: Thermo Poplar. Western Red Cedar is also available by special order. Call 954-674-8133 for pricing.
- Heater: Harvia KIP 4.5KW WiFi or HUUM Cliff Mini 3.5KW — app-controlled for precision heat scheduling
- Accessories: Optional bench skirting for a polished, spa-grade interior finish
- Installation: Modular Carbon Smart™ system — engineered for clean, professional installation
Specifications
- Dimensions: 4' × 5' × 8' (W × D × H)
- Capacity: 1–2 persons
- Wood: Thermo Poplar
- Heater Range: 3.5KW–4.5KW
- Placement: Indoor
- Delivery Inspection: Please report any shipping damage or missing parts within 72 hours of delivery.