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Leil® Black Cube Classic Outdoor Sauna Kit

Leil® Black Cube Classic Outdoor Sauna Kit

Leil® Saunas
Authorized Dealer
$9,180.00 - $11,210.00
$9,180.00
$9,180.00 - $11,210.00
$9,180.00
Professional installation available Request a Quote
Back Wall Construction: Standard
Lighting: No Lighting

The Leil® Black Cube Classic Outdoor Sauna Kit is a compact 4-person outdoor sauna handcrafted in Estonia with a bold black exterior and signature rounded arches. Its 1.6" (40mm) ThermoWood® construction, black tempered glass front, and wide two-level L-shaped bench create a modern Nordic sauna designed for smaller outdoor spaces without sacrificing room to relax.

The Classic is designed for an electric sauna heater and can be customized with optional LED lighting and a half-panoramic rear window.

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 bathers
  • 1.6" (40mm) Nordic ThermoWood® construction
  • Wide 2-level L-shaped bench with bench skirt and backrest
  • 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
  • Optional LED lighting
  • Optional half-panoramic rear window
  • 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
2-level L-shaped benches
Heater Type
Electric
Weight
1,764 lb
Installation Location
Outdoor
Country of Manufacture
Estonia

Manuals & Resources

Installation Manual

Assembly Video

Black Cube Brochure

Dimensions Drawing

Half-Panoramic Window Installation Manual

Black Cube Catalogue

Outstanding Customer Satisfaction

Trusted by customers for comfort, quality, and lasting peace of mind.

Full Warranty Included

Authorized dealer pricing with manufacturer-backed coverage.

Flexible Financing

Monthly payments from 0% APR with Shop Pay.

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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.