Leil Saunas Black Cube- COMFORT 6-Person Outdoor Sauna Kit

Leil Saunas Black Cube - COMFORT 6 - Person Outdoor Sauna Kit - NW Immersion
$10,480.00
$13,779.00 Save $3,299.00
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HSA/FSA Eligible.
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The Leil Black Cube Comfort 6 Person Outdoor Sauna is a striking fusion of Nordic craftsmanship, architectural design, and authentic wellness performance. Handcrafted in Northern Europe, this luxury outdoor sauna is designed for those who value both elevated aesthetics and a true social sauna experience. Its bold black exterior, signature arched detailing, and mirrored tempered glass front create a dramatic modern presence that complements contemporary outdoor spaces and luxury homes alike.

Built from premium thermo-pine, the Black Cube Comfort is engineered for exceptional durability, heat retention, and year-round outdoor performance. Inside, the spacious layout features two extra-long 74" alder wood benches positioned in an opposing configuration, creating a more open, comfortable environment ideal for conversation, relaxation, and stretching out during longer sauna sessions.

Thoughtfully designed to balance compact exterior dimensions with an expansive interior feel, the Black Cube Comfort transforms any backyard into a refined wellness retreat. Compatible with both electric and wood-burning sauna heaters, this premium sauna delivers flexibility, timeless Scandinavian design, and an elevated daily ritual.

  • Seats Up to 6 People
    Designed for shared sauna sessions with a spacious, social interior layout.
  • Premium Thermo-Pine Construction
    Durable, weather-resistant thermo-pine crafted for year-round outdoor performance.
  • Two 74" Alder Wood Benches
    Extra-long two-tier benches provide exceptional comfort and relaxation.
  • Black Tempered Glass Front
    Mirrored black glass creates privacy while adding a bold architectural statement.
  • Handcrafted in Northern Europe
    Authentic Scandinavian craftsmanship with refined minimalist design aesthetics.
  • HSA/FSA Eligible
    Eligible wellness investment for health and recovery-focused lifestyles.

Flat-Rate Scheduled Delivery: $990
Scheduled curbside LTL delivery within the contiguous U.S.

Panoramic Rear Window-Highly Recommend you choose the Huum Drop 9kw with this option

Lighting-LED-strips under the bench and the behind backrest

Heaters-choose one (must include heater) *

Save $$$ When you Bundle with our Premium Cold Plunge Options

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The Black Cube Comfort is designed for those who enjoy shared sauna sessions without sacrificing comfort or style. With its deeper layout and opposing bench configuration, this model offers increased seating space and a more open, social interior feel—ideal for couples, families, or small groups.

Part of the Leil Saunas Black Cube Collection, the Comfort model features a bold, modern exterior paired with a warm, inviting interior crafted for relaxation. The opposing benches allow for face-to-face seating, creating a communal sauna experience while maintaining excellent heat circulation throughout the cabin.

Engineered for outdoor use, the Black Cube Comfort balances compact exterior dimensions with a thoughtfully expanded interior, making it a perfect fit for backyards, patios, and wellness retreats where space and aesthetics matter.

Whether you’re hosting shared sauna sessions or simply want extra room to stretch out, the Black Cube Comfort delivers a refined sauna experience with Nordic design sensibility and functional comfort.

Modern Nordic craftsmanship

Crafted in Northern Europe, the Black Cube COMFORT uses 40 mm Thermo-Pine walls that resist moisture, warping, and temperature swings. The dark exterior finish and black tempered glass create a bold, architectural look that pairs well with modern homes.

Comfortable seating for shared sessions

Inside, the two 74" long benches face each other creating a great social sauna experience, allowing up to 6'2" person to lie down. At 23.6″ wide, the benches allow users to recline comfortably or stretch out during longer sessions.

Balanced heat and airflow

An optimized heater position keeps the interior feeling open while supporting even heat distribution. Multiple ventilation openings maintain fresh airflow and help keep feet warm during use.

Designed for long-term outdoor use

From the shingled roof and metal gutters to the thick back wall and included floor grid mat, every element is designed to handle year-round outdoor exposure with minimal maintenance.

  • Thermowood exterior and roof for excellent insulation and durability
  • 2-74" long benches for sitting or lying back in comfort
  • Tempered black glass windows and door for a private, moody interior
  • LED mood lighting (dimmable) to set the ambiance
  • Full-circle arches and square shingle roof to balance minimalism with subtle architectural detail

And despite its compact footprint, it doesn’t feel small — the spacious interior volume of 261.7 cu ft ensures you have room to stretch out and unwind.

  • Walls: 40mm Thermowood 
  • Roof: Black shingle roof 
  • External door: Black tempered glass door 
  • Front wall: Black 8mm tempered glass 
  • Benches: 2-level benches with skirts + backrests 
  • Arches: Full circle arches (front & back), painted black
  • Ventilation: 3–4 ventilation openings 
  • Floor cover: Nerostep plastic grid mats 
  • Baseframe & external moldings: Painted black


Coverage area: 52.7 ft²

Sauna room volume: 261.5 ft³

External dimensions (W × D × H): 86.2" × 89.0" × 86.6"

Internal dimensions (W × D × H): 80.2" × 78.0" × 80.2"

Weight: 1,929 lbs

Heater compatibility: Electric heater ✅ / Wood-burning heater ✅

The Black Cube is designed for DIY assembly and is typically completed over two days with basic tools. Panels arrive prefabricated and fit together cleanly for a straightforward build.A flat, stable surface such as concrete, pavers, or a reinforced deck is recommended. Heater installation must follow local electrical codes and should be completed by a licensed electrician.

Resources

Heater (required, choose one)

  • HUUM Drop 9 kW with WiFi Classic Control + rocks: +$3,395
  • HUUM Drop 9 kW with WiFi Glass Black Control + rocks: +$3,795
  • HUUM Hive Mini 9kw heater package with UKU WiFi Black Control and required stones +$4,781
  • Harvia Spirit SP90E Electric Sauna Heater Package w/ WiFi +$3,618
  • HUUM HIVE Flow Mini Sauna Wood Burning Stove +$3,339

Rear window 

  • Black tinted glass panoramic window: +$1,090

Lighting

LED set includes: LED (2 or 4pcs), cable, transformer, dimmer switch, installation box

  • Bench LED kit (2 pcs): +$515
  • Bench & backrest LED kit (4 pcs): +$880

Cold plunge bundles

  • Black Cuboid Cold Plunge (.8 HP chiller): +$8,499
  • The Immersion Tub all-in-one cold plunge: +$8,799
  • Matte Black Duo + Chiller (1hp): +$5,799

The Black Cube Comfort is delivered via scheduled premium freight service directly to your residence, project site, or installation location for a seamless delivery experience. Each sauna is carefully prepared and professionally packaged to ensure it arrives securely and in pristine condition.

When inventory is available, most orders ship within approximately 3–5 business days. Due to the limited production nature and international demand for the award-winning Black Cube Collection, select configurations and upgrades may occasionally require extended lead times.

If a unit is temporarily out of stock, upcoming production shipments may require an additional 6–8 weeks or longer, depending on manufacturing schedules and overseas transit availability.

For time-sensitive projects, custom builds, or architectural installations, we recommend contacting our team prior to purchase to confirm current inventory, production availability, and estimated delivery timelines for your preferred configuration.

Each sauna arrives as a complete premium DIY sauna kit and includes all essential structural components, roofing materials, hardware, and finishing details required for installation.

Pallet size: 3.94' × 7.38' × 3.94'

This sauna includes a two-year manufacturer warranty covering defects in materials and workmanship, as well as damage that occurs prior to transportation. The warranty does not cover natural wood variations such as color changes, knots, or cracking, normal wear and tear, improper assembly or installation, unauthorized modifications, or force majeure events including natural disasters or war.

Frequently Asked Questions

Most customers complete assembly in about two days with at least 2 people. The modular design and prefabricated panels simplify installation.

With an interior volume of approximately 261 cubic feet, a 9 kW electric heater is recommended to deliver consistent heat and faster warm-up times. The COMFORT edition can also be configured with awood-burning stove for those who prefer a traditional sauna experience.

Leil saunas require a 220–240V hardwired connection with a dedicated breaker for the heater. A separate dedicated 120V circuit is also required to power accessories such as lighting and control systems. We recommend confirming the exact amperage and wire size with your electrician based on the specific heater model selected.

If you choose the wood-burning stove option, only a 120V connection is required for the LED lighting (if selected).

Yes. Many customers use HSA or FSA funds when purchasing for wellness purposes. If qualified by Gale, you will be provided with a Letter of Medical Necessity and may use your HSA/FSA Debit card at checkout or pay and then submit to your representative for reimbursement.

Your sauna arrives as a DIY kit, securely packed on a large pallet and delivered via LTL freight. The driver will lower it to the ground at the curb (curbside delivery) and contact you in advance to schedule a convenient drop-off time. From there, you can move the individual panels to your build site — most pieces are easy to handle with two people. Each shipment includes tracking updates and protective packaging to ensure a smooth delivery. At the driver’s discretion, your sauna may be placed inside a nearby garage. Most saunas can be fully assembled by two people in less than a day, and our team is always available to assist if you have any questions.

The black tempered glass provides enhanced privacy while still allowing natural light to enter the sauna. It is designed to maintain optimal heat performance without compromising efficiency.

The two opposing benches each measure 74.8" in length, providing ample space for someone up to 6'2" to comfortably lie down. At 23.4" wide, they offer generous room for a relaxed and comfortable sauna experience.

We do not offer assembly services directly, but there are trusted options available to make setting up your Leil sauna simple and stress-free. Our saunas are designed for easy DIY assembly, and most customers complete the installation in just a few hours using basic tools and the step-by-step guide included with every kit.

If you prefer professional help, you can easily connect with qualified installers through these services. Simply search “sauna assembly” and enter your zip code to receive quotes from vetted professionals:

Thumbtack.com LoadUp.com

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