Custom Indoor Sauna Room - 4' x 5' x 8' - Finnish Sauna Builders
Custom Indoor Sauna Room - 4' x 5' x 8' - Finnish Sauna Builders
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Description
Description
Transform your home into a wellness retreat with the Finnish Sauna Builders Custom Indoor Sauna Room Kit. This complete sauna package includes everything you need to build an authentic Finnish sauna experience, whether you're a DIY enthusiast or a professional contractor.
Complete Sauna Kit - Ready for Your Space
Our custom indoor sauna kit arrives with all interior components precisely cut and tailored to your room dimensions. Simply provide the framing, insulation, electrical wiring, and exterior wall covering—we supply the rest. Building your dream sauna has never been easier or more affordable.
Premium Wood Options - Choose Your Perfect Finish
Select from three exceptional wood types, each offering distinctive benefits for your sauna interior:
Grade A Knot-Free Western Red Cedar
The classic choice for sauna enthusiasts. This premium softwood remains comfortably cool to the touch during sauna sessions and naturally resists moisture and decay. Enjoy its refined, knot-free appearance with beautiful color variations ranging from reddish to pinkish-brown tones, accented with darker bands and pale sapwood streaks.
Thermo Aspen/Alder
Experience the luxury of intense thermally modified wood, heat-treated at 419°F or higher. This advanced process creates a stunning deep, rich color while dramatically enhancing durability and dimensional stability. Perfect for those seeking a modern, sophisticated aesthetic with superior performance. Suitable for both indoor and outdoor applications.
Thermo Poplar
A thermally modified wood treated at approximately 374°F for optimal indoor sauna use. This medium modification delivers enhanced dimensional stability, improved resistance to humidity and temperature fluctuations, and a warm, rich tone—all achieved through a chemical-free process. Ideal for creating a naturally beautiful, long-lasting sauna environment.
Customizable Bench Configurations
Choose the bench layout that best fits your space and needs from our selection of configurations shown in the product images. Each configuration is designed to maximize comfort and optimize your sauna experience.
What's Included in Your Custom Sauna Kit:
- Foil vapor barrier for proper moisture protection
- Ergonomic backrests for comfortable relaxation
- 1×4 tongue & groove boards (walls & ceiling) in your selected wood
- Clear 1×4 bench boards with supports (20″ deep) in matching wood—custom-built to your chosen configuration
- Corner moldings for walls, ceiling, and baseboards (matching wood)
-
All-glass sauna door with wood handles and trim
- Frame: 27.2″ × 78.7″ (690 × 2000 mm)
- Glass: 24.4″ × 77.3″ (620 × 1963 mm)
- Frame thickness: 1.65″ × 3.6″ (42 × 92 mm)
- Rough opening required: 28″ × 80″
- Duckboard flooring for walk area (matching wood)
- Upper and lower vent grills for proper air circulation
- Traditional sauna bucket with liner and ladle
- Sauna thermometer for temperature monitoring
- Comfortable headrest
- Marine-grade, wall-mount, vapor-proof sauna light
- Detailed installation instructions for easy assembly
Important Installation Notes:
- Recommended ceiling height is 8 feet per manufacturer safety and clearance guidelines. For custom ceiling heights, please contact our support team.
Perfect for Home or Commercial Use
Whether you're building a personal wellness sanctuary or outfitting a spa or gym, our DIY sauna kits deliver professional-quality materials at competitive prices.
Expert Support Available
Contact your Finnish Sauna Builders Specialist today for personalized guidance in creating the perfect sauna room for you and your family.
Note: Your sauna shipment will include an all-glass door, though some photos may display a glass wall for reference. Backrests are shipped flat; if you'd like an angled backrest, additional spacers can be easily created on-site to achieve your desired pitch.
Note: Wall boards run in the standard horizontal direction unless room width exceeds 8 ft; in such cases, an interior seam will be added where two boards meet to span the width.
Sauna Heater Comparison Chart
| Feature | Harvia KIP45B 4.5KW | Harvia KIP45W 4.5KW | HUUM Cliff Mini 3.5KW |
|---|---|---|---|
| Product Image |  |
 |
 |
| Power Output | 4.5 KW | 4.5 KW | 3.5 KW |
| Cubic Feet Coverage | 176 - 353 cu ft | 176 - 353 cu ft | 106 - 247 cu ft |
| Control Type | Built-in Control | WiFi Control | WiFi Control |
| WiFi Connectivity | ❌ No | ✅ Yes | ✅ Yes |
| Heater Stones Included | ✅ Yes | ✅ Yes | ✅ Yes |
| Railing Included | ❌ No | ❌ No | ✅ Yes |
| Brand | Harvia | Harvia | HUUM |
| Model | KIP45B | KIP45W | Cliff Mini |
| Remote Control | Manual only | App-based via WiFi | App-based via WiFi |
Harvia KIP45B 4.5KW
Harvia KIP45W 4.5KW
HUUM Cliff Mini 3.5KW
Key Differences
Power & Heating Capacity:
- Harvia models: 4.5 KW (suitable for 176-353 cubic feet)
- HUUM Cliff Mini: 3.5 KW (suitable for 106-247 cubic feet)
Control & Connectivity:
- KIP45B: Basic built-in control panel (no remote features)
- KIP45W & Cliff Mini: WiFi-enabled for smartphone control and scheduling
Design & Accessories:
- HUUM Cliff Mini is the only model that includes a protective railing
- All models come with heater stones included
Resources
Shipping
Shipping
Order Processing :-
Orders are processed within 1–3 business days.
Shipping Time :-
Estimated delivery is 5–10 business days.
Shipping Costs :-
Calculated at checkout.
Tracking :-
Tracking information will be emailed once shipped.
Delays :-
Delays may occur due to customs or peak demand.
Incorrect Address :-
Customers are responsible for accurate shipping details.
Lost or Missing Orders :-
Contact support if your order has not arrived.
Return & Refund
Return & Refund
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at harmonysaunastudio@gmail.com. Please note that returns will need to be sent to the following address: [INSERT RETURN ADDRESS]
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at harmonysaunastudio@gmail.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at Offroadoutpost@outlook.com.
