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Leil® Black Cube Premium Outdoor Sauna Kit

Leil® Black Cube Premium Outdoor Sauna Kit

Leil® Saunas
Authorized Dealer
$11,180.00 - $12,120.00
$12,120.00
$11,180.00 - $12,120.00
$12,120.00
Professional installation available Request a Quote
Lighting: Bench & Backrest Lighting

The Leil® Black Cube Premium Outdoor Sauna Kit combines contemporary Nordic design with an upgraded 4-person interior. Handcrafted in Estonia, it features 1.6" (40mm) ThermoWood® construction, opposing two-level benches, a distinctive hexagonal decorative rear wall, black tempered glass, and the Black Cube collection's signature rounded profile.

The opposing bench layout creates a comfortable face-to-face setting for shared sauna sessions while making efficient use of the compact interior.

Note:

  • Heater package and LED lighting are sold separately. Electrical installation must be performed by a licensed electrician.
  • UV-resistant exterior treatment is recommended.

Features

  • Accommodates up to 4 people
  • 1.6" (40mm) Nordic ThermoWood® construction
  • Opposing 2-level benches for face-to-face seating
  • Bench skirts and backrests
  • Decorative hexagonal rear wall exclusive to the Premium model
  • 8mm black tempered glass front
  • Signature full-circle arches with black finish
  • Black shingle roof
  • Integrated ventilation with 3–4 ventilation openings
  • Nerostep plastic grid floor mats
  • Black base frame and exterior moldings
  • Designed for an electric sauna heater (sold separately)
  • Optional LED lighting
  • Handcrafted in Estonia

Specifications

Capacity
4 people
Exterior Dimensions
86"W × 65"D × 90"H
Interior Dimensions
80"W × 54"D × 80"H
Interior Volume
176.6 ft³
Wall Material
40mm ThermoWood®
Front Glass
8mm black tempered glass
Bench Configuration
Opposing 2-level benches
Interior Finish
Decorative hexagonal rear wall
Heater Type
Electric
Weight
1,820 lb
Installation Location
Outdoor
Country of Manufacture
Estonia

Manuals & Resources

Installation Manual

Dimensions Drawing 1

Dimensions Drawing 2

Black Cube Catalogue

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Timeless Design

Timeless Design

Form follows function: clean lines, natural wood, and understated details create a calm visual language. Leil® Saunas looks beyond passing trends, bringing thoughtful design to a timeless sauna tradition. The result is a space that looks right today and feels just as inviting for years to come.

Outdoor Saunas

Outdoor Saunas

Your own retreat, closer to nature

Turn a quiet corner of your backyard into a place to slow down. Leil® outdoor saunas bring natural wood, thoughtful design, and the warmth of traditional sauna bathing to your outdoor living space.

Choose the clean architectural lines of Viva or the softly rounded silhouette of Black Cube. Each offers a distinctive setting for stepping away from the day, reconnecting with your surroundings, and making time for your own sauna ritual.

Shop Outdoor Saunas
Indoor Saunas

Indoor Saunas

A daily ritual, right at home

Make room for a daily pause, without stepping outside. Como indoor saunas from Leil® Saunas combine ThermoWood® walls, smooth aspen seating, and a clear glass door in a clean, contemporary design.

Whether planned for a bathroom, home gym, or dedicated wellness room, Como brings the sauna experience into the rhythm of home. A warm and inviting space to leave the day behind and enjoy a moment to yourself.

Shop Indoor Saunas

Frequently Asked Questions

Products

What type of wood do you use in manufacturing, and why is thermally treated wood good?

Leil® Saunas uses Lunawood ThermoWood® (thermally modified pine) for the sauna exterior, while benches are made from aspen and alder. Thermally treated wood is ideal for saunas as it’s resistant to water and humidity, doesn’t swell or shrink, won’t warp or twist like untreated wood, and doesn’t leak resin.

Are your products suitable for year-round use?

Yes, Leil® saunas can be used year-round, enduring cold winters and hot summers. We use 40mm or 70mm thick thermally treated wood, roofing with shingles or EPDM rubber to ensure moisture resistance. We also recommend applying an external UV-protective varnish treatment which ensures long-lasting durability.

Does the standard sauna kit include a heater?

A standard kit includes the sauna only. Optional LED lighting and a heater packages are available as add-ons.

Are your products certified and compliant with European standards?

Yes, all materials are certified and compliant with EU standards.

Are sauna components painted at the factory?

DIY (self-assembly) sauna components are partially factory-painted, requiring final finishing during installation. Fully assembled saunas are factory-painted and finished.

Assembly & Maintenance

Does the product come with an instruction manual, or can it be downloaded?

All products come with a physical instruction manual. Manuals can also be downloaded from our website.

On what surface can the sauna be installed?

The sauna must be installed on stable and level ground that doesn’t settle. This means the ground must be prepared, either with driven piles or a concrete foundation.

Can I assemble the sauna myself (instructions, fasteners, required tools)?

Yes, self-assembly is possible. However, we recommend using trained specialists who have the required knowledge and tools.

Why and how should I maintain the sauna?

We recommend treating the sauna annually with proper products: externally with a UV- and moisture-resistant varnish to maintain long-term durability, and benches with special sauna oil or wax.

How is drainage handled?

Leil® saunas have drainage systems with built-in floor drains. The floors are slightly inclined to direct water toward the drain.

How often should maintenance be performed?

At least annually, depending on frequency of use.

Does thermally treated wood require maintenance?

Yes, thermally treated wood also requires annual treatment.

How can I extend the lifespan of my sauna?

Regular annual maintenance, treating both the interior and exterior surfaces, significantly extends sauna lifespan.