Model B870

Looking for a space saving infrared sauna large enough for 3? Finnleo’s B870 is ideal for 3 to sit together chatting and relaxing. With its 5-sided design and a footprint of 52″ x 52″, this sauna can fit into almost any space while giving you roomy, comfortable seating. The corner hugging shape combines great design with incredible space efficiency.


Primary Specs
Width: 52"
Depth: 52"
Height: 77"
Electrical Requirements: Plug-in, 15 amp 120-volt outlet


This Far-Infrared Sauna Includes

  • Saunatec CarbonFlex heating system, integral with wall panels and bench support panels – with the largest surface area in the industry
  • Prefabricated wall panels, finished in clear Canadian Hemlock for its sturdy quality and beauty (Western Red Cedar available)
  • Fast assembly with no tools – with wall panels mounted onto an easy fit base and topped with easy fit ceiling panel
  • Saunatec digital control system mounted inside and out
  • Pre-built Hemlock or Cedar benches with integral bench seat heaters
  • Deluxe all-glass door
  • High quality, heat-proof stereo speakers pre-installed in ceiling panel
  • Low-voltage mini-spot lights installed in the ceiling; roof overhang includes integral exterior mini spot lights
  • Integral color light therapy system
  • ETL listed “as a complete plug-in room” – for safety and reliability
  • Industry leading warranty backed by America’s #1 sauna company

10 Reasons to Buy

1. Finnleo’s CarbonFlex Far-Infrared “Organic Carbon” Heating Technology:

  • Provides the softest, most enjoyable far-infrared heat available.
  • The wall-to-wall heating system ensures a complete enveloping heat with no cold spots or hot spots.
  • More square inches of heater coverage than any IR sauna in the market.
  • In-floor heated ceramic tiles
  • With carbon technology and raw material imported from Japan, it operates at safer and more comfortable sauna temperatures.
  • Its radiant heat penetrates deeply and produces more sweat than competitor saunas.

2. Digital Controls Inside and Out.

Easy to use digital controls have set temperature, actual temperature, set time and time remaining. Controls also include light switches for internal and external lights and color light therapy system.

3. Outstanding Sauna Design.

“Design” is the most obvious reason to choose Finnleo. But design is more than skin deep. There are no visible external buckles. Furniture quality detailing includes the fine-grained wood throughout, custom-made molding, comfortable seating, doors and windows that are thoughtfully designed to complement the sauna.

4. Luxurious Canadian Hemlock and Western Red Cedar.

Our designs include hand selected tongue and groove, vertical grain Hemlock and Western Red Cedar – all from the sustainable forests of Canada. Exquisite beauty, great performance and environmentally friendly – more great reasons why a Saunatec IR sauna is your best choice.

5. All models can be plugged into standard 120-volt household outlets.

Call it an amazing technological feat – the huge sq. footage coverage of the wall-to-wall heaters, and the energy efficiency of the carbon heater panels. Finnleo rooms heat up as quickly as any other rooms in the industry, yet can be safely plugged into standard household outlets – even the roomy 4 person models. All rooms are ETL safety listed.

6. Fast Assembly With No Tools.

The sauna can be simply installed in minutes. Each sauna arrives in six pieces (floor panel, ceiling panel, and four wall panels.) Each wall panel includes an exclusive integral latching system – for seamless good looks and great durability. Every panel is pre-trimmed and pre-wired at the factory.

7. Lighting Systems and Color Light Therapy.

Standard on Finnleo Premium Line of far-infrared saunas, each room includes color light therapy – easily activated with the push of a button on the sauna control panel. Choose the light color you’re in the mood for (or choose rotating colors) – for added relaxation and serenity. Each sauna also includes integral mini-spotlights in the interior ceiling and on the exterior ceiling overhang.

8. Sound and Video System.

Each Finnleo far-infrared sauna room includes a Saunatone™ Stereo system, which includes hook-up for your music player (iPod, MP3, USB, micro SD).

9. Finnleo Reputation.

Not only do you get the finest Far-Infrared sauna available, you get the company behind the product. With so many companies “here today, gone tomorrow”, isn’t it reassuring to make such an important purchase from the world’s largest and oldest sauna company? Since it’s beginning in Finland in 1919, Finnleo/Saunatec has been a world leader in sauna innovation, technology and design.

10. Finnleo Warranty and Customer Service.

As noted in Reason #9, when you buy a Finnleo IR room, you get the backing of the world leader in saunas – Saunatec. The Finnleo warranty gives you peace of mind. It’s simple, to the point and the most powerful in the industry. Furthermore, you have toll-free access to our dedicated staff of customer service professionals. We expect you will get many, many years of trouble-free performance from your Finnleo IR sauna; however, if you should ever need technical assistance, we’ll be here to serve you – just as we have for the past 88 years.

Color Therapy


is the symbol of love and of life itself.


is a cool color that has a calming effect.


is a cooling, sedating color.


is the color for mental relaxation.


promotes awareness and consciousness.


is a clear purifying color.