Leil® Black Cube Classic 4 Person Outdoor Sauna Kit
Leil® Black Cube Classic 4 Person Outdoor Sauna Kit
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A complete four-person black Thermowood sauna package with £2,636 of heating, controls, lighting and accessories included.
- Comfortable seating for four people
- HUUM Drop 9kW heater and stones included
- UKU Glass WiFi control included
- Black tempered-glass front and dimmable LED lighting
- Flat-pack delivery with professional assembly available
Held in UK stock and available to order. Delivery to mainland England and Wales is included. Need help with access, electrics or installation? Ask a Heracles sauna specialist.
The Black Cube Classic combines a full black-glass front, 40mm Thermowood and a compact four-person layout for smaller gardens.
The complete kit includes a black full-glass front, HUUM Drop 9kW wall-mounted heater, UKU Glass WiFi control, dimmable LED lighting and a black bucket and ladle set.
Don't be deceived by its compact size or affordable price; this sauna is crafted with superior materials and can easily seat four people comfortably.
Back to Black
If you live by the motto “black goes with everything,” then the Black Cube Classic is your new best friend. Wrapped in a sleek, all-black exterior, this sauna doesn’t just sit in your garden—it makes a statement. It’s the sauna Batman would choose (if he ever took a day off). With its tempered black glass, dimmable LED mood lighting, and Huum Drop heater that heats things up as much as your style does, it’s not just a place to relax—it’s a conversation starter. Who knew sweating in style could look this good?
Build Your Sauna with Ease
As the name suggests the Black Cube comes as a kit for self assembly, hence the affordable price. But don't worry, it comes with very detailed assembly instructions (which you can find under the delivery and installation tab above) and should take no more than a few days to build if you know what you are doing.
Let Our Expert Team Handle the Assembly for You
Our expert assembly team can install the Black Cube Classic in your garden. A team of three skilled carpenters will complete the job in just one day. If you’d like a quote, please get in touch and let us know your location. Installation costs are calculated based on their travel time from London. See them in action below!
What’s Included in the Black Cube Kit:
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Black Cube Classic Sauna with Full Glass Front (worth £7,999)
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HUUM Drop 9kW Wall-Mounted Heater and side panel (worth £1,299)
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UKU Glass WiFi Control Panel (worth £839)
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2 X Dimmable LED Strip Lighting (worth £249)
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Black Aluminium Sauna Bucket and Ladle Set (Worth £249): A durable 7-litre aluminium bucket with a matching ladle and curved wooden carry handle. The matt-black finish suits the Black Cube, while its 24 cm diameter and 20 cm height give you ample water for a full sauna session. A small screwdriver for fitting the handle is included.
£10,635 complete package value
The Black Cube Classic kit is £7,999, including £2,636 of HUUM heating, WiFi control, dimmable lighting and sauna accessories.
Huum Drop 9kW Wall Mounted Heater
The HUUM Drop 9 kW heater stands out for its award-winning, space-saving wall-mounted design that frees up floor area and brings elegance to your sauna. Its compact form accommodates up to 60 kg of sauna stones, enabling soft, long-lasting steam thanks to the stones’ direct contact with the heating elements—producing a more traditional, gentle "löyly" than metal-heavy heaters. Crafted with durable stainless steel and backed by a 5-year warranty, it’s built to last. Plus, when paired with the UKU Wi‑Fi control, you can pre‑heat your sauna from your phone—perfect for planning sessions ahead.
Note: Due to the compact layout of the Black Cube, it’s not possible to install the safety rail on the HUUM Drop 9 kW heater.
UKU Glass
The HUUM UKU Black Glass Sauna Control Panel: a sleek, modern addition to your Black Cube. With its premium black glass design, this control panel effortlessly combines cutting-edge technology with minimalist aesthetics, allowing you to manage your sauna experience with ease and style. Perfect for complementing the bold design of the Black Cube sauna, it offers intuitive functionality while enhancing the overall ambiance.
Dimmable LED Lights - Create the Perfect Ambience
The LED lighting kit includes a wireless dimmer switch, giving you complete control over the brightness and atmosphere of your sauna.
Each set contains two LED strips. For the best lighting effect, we recommend installing them in the groove above the backrest. However, you can also position them underneath the bench, or install one strip above and one below to create a unique lighting arrangement.
For longevity and ease of use, we recommend mounting the wireless dimmer switch outside the sauna. This keeps it easily accessible and protects it from excessive heat, as the dimmer is rated for temperatures up to 40°C.
Compact on the Outside - Spacious on the Inside
The Black Cube Classic offers a private sanctuary that is compact enough to grace small gardens without compromising on space, comfortably hosting up to 4 individuals. With its thoughtful design, this sauna becomes not just a part of your wellness routine but an integral element of your garden's aesthetic.
The Black Cube Classic, with its luxurious two-step alder bench and expansive lying area, invites you to unwind in style. Its tempered glass doors and windows balance privacy with a sense of openness, allowing you to gaze upon your surroundings while you let the gentle heat envelop you. The serene glow of LED lighting complements the calming experience, setting the perfect mood for relaxation.
Exceptional Features of the Black Cube
- Spacious Yet Compact: At 1.6m in deep, the Black Cube is designed to maximise internal space while remaining ideal for smaller outdoor areas.
- Alder Benches and Thermowood Construction: Enjoy the robustness and beauty of natural materials known for their resilience and thermal properties.
- Innovative Design: From the square shingle roof to the full-circle arches, every aspect is crafted to offer both visual appeal and practical benefits.
- Walls & Roof: Made from 40mm thick, high-quality Thermowood for outstanding durability and insulation.
- External Door: Equipped with a tempered black glass door, ensuring safety and elegance.
- Benches and Seats: 2-level benches with 1-2 pcs of backrests designed for utmost comfort during your sauna experience.
- Floor Cover: Includes 1 pcs NeroStep plastic grid mats for a clean and safe floor area.
- Ventilation: 3-4x ventilation openings for optimal air circulation, maintaining a comfortable atmosphere inside the sauna.
Delivery
The Black Cube Classic is held in our UK warehouse. Delivery to mainland England and Wales is included and usually takes 3–5 working days.
Specifications of the Leil® Black Cube Classic
| Specifications | Details |
|---|---|
| Capacity | 4 People |
| Outer Dimensions (W x D x H) | 2.18 x 1.66 x 2.22m |
| Inner Dimensions (W x D x H) | 2 x 1.38 x 2.1m |
| Sauna Volume | 5.71 m³ |
| Sauna Weight | 750 kg |
| Pallet Size | 1.2m H x 1.2 D x 2.12m L |
| Materials | Sauna shell - Black Thermowood Door/Front - Black Tempered Glass |
| Bench Material | Alder |
| Lighting | Dimmable LEDs |
| Special Features | Square Shingle Roof, Full Circle Arches |
| WALLS | 40mm THERMOWOOD |
| ROOF | Square shingle roof, Black |
| EXTERNAL DOOR | Tempered black glass door |
| FRONT WALL | Black 8mm tempered glass |
| BENCHES AND SEATS | 2-level benches |
| BACKRESTS | 1-2pcs backrests for sauna room |
| FLOOR COVER | 1pcs Nerostep plastic grid mats |
| ARCHES | Full circle arches for front and back wall, painted brown |
| HEAT PROTECTIVE BEDDING | Heat protective bedding for stove |
| VENTILATION OPENINGS | 3-4x ventilation openings |
| INSIDE | Natural wood |
| BASE FRAME | Painted Black - To be done during assembly |
| EXTERNAL MOLDINGS |
Painted Black - Pre-painted |
The complete £10,635 Black Cube Classic package for £7,999
Save £2,636 with the HUUM heater, WiFi control, two dimmable LED strips, black bucket and ladle included.
Seating & bench layout
Compare the usable bench space, comfortable seating and lie-down capacity before choosing your sauna.
| Bench layout | L-shaped, two-tier |
| Usable bench dimensions | 2,000 mm L × 600 mm D and 1,230 mm L × 600 mm D 6 ft 7 in L × 2 ft D and 4 ft L × 2 ft D |
| Seats comfortably | 4-5 |
| Maximum seated capacity | 4 |
| Lie-down capacity | 1 adult |
Lie-down capacity assumes a minimum usable bench length of 175 cm (5 ft 9 in). Taller users should compare the listed bench length with their height.
24/7 Customer Support
24/7 Customer Support
Our customer support team is always here to help. Contact us anytime via email or live chat for assistance before or after your purchase.
