Saunasell
Saunasell Black Cube Premium 4-Person Outdoor Sauna Kit
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Saunasell Black Cube Premium 4-Person Outdoor Sauna Kit
Modern Design | Outdoor Kit | Thermowood & Alder Finish
Minimalist Design. Maximum Presence.
Bold. Sophisticated. Unapologetically modern. The Black Cube Premium Sauna is more than a wellness space — it’s a sculptural statement for your backyard. With its sleek all-black Thermowood exterior, crisp lines, and smoked tempered glass, this sauna embodies contemporary luxury without compromise.
Designed for outdoor spaces where form matters as much as function, the Black Cube fits beautifully into compact yards and patios, while comfortably seating up to four adults inside. The interior features natural wood finishes, layered alder benches, and dimmable LED lighting, creating a soothing environment that’s as calming to the eyes as it is to the body.
Build It. Enjoy It. Make It Yours.
This sauna kit is designed for self-assembly — making premium wellness more affordable without sacrificing quality. With detailed instructions included, you or your builder can have it up and running in a matter of days. Every component is engineered to fit seamlessly together for a clean, professional finish.
Crafted for Comfort. Designed to Impress.
The Black Cube Premium combines thoughtful engineering with timeless materials:
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Thermowood exterior and roof for excellent insulation and durability
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2-level alder benches for sitting or lying back in comfort
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Tempered black glass windows and door for a private, moody interior
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LED mood lighting (dimmable) to set the ambiance
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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 201.7 cu ft (5.71 m³) ensures you have room to stretch out and unwind.
Features
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Fits up to 4 people
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Thermowood walls and roof (1.6” thick / 40mm)
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Square shingle roof with full-circle arches
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Black tempered glass door and front panel (0.31” / 8mm thick)
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2-level alder benches with 1–2 backrests included
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Dimmable LED lighting system
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Plastic NeroStep floor mat for safety and cleanliness
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3–4 ventilation openings for proper airflow
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Includes heat protective bedding for the stove
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Delivered as a flat-pack self-assembly kit with instructions
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Base frame painted black during assembly
Specifications
|
Specification |
Details |
|---|---|
|
Capacity |
4 people |
|
Outer Dimensions (W × D × H) |
85.8” × 65.4” × 87.4” (2.18 × 1.66 × 2.22 m) |
|
Inner Dimensions (W × D × H) |
78.7” × 54.3” × 82.7” (2.00 × 1.38 × 2.10 m) |
|
Sauna Volume |
201.7 cu ft (5.71 m³) |
|
Sauna Weight |
1,653 lbs (750 kg) |
|
Pallet Size |
47.2” H × 47.2” D × 83.5” L (1.2 × 1.2 × 2.12 m) |
|
Wall Thickness |
1.6” (40mm) |
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Bench Material |
Alder |
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Exterior Material |
Black Thermowood |
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Front/Door Glass |
Tempered black glass (0.31” / 8mm) |
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Lighting |
Dimmable LEDs |
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Floor Mat |
NeroStep plastic grid |
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Ventilation |
3–4 openings |
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Roof |
Square shingle, black |
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Moldings & Base Frame |
Pre-painted black |
What’s Included
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Complete self-assembly sauna kit
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2-level alder benches and 1–2 backrests
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Tempered black glass door and front wall
- NeroStep plastic floor mat
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HUUM Drop 6kW & UKU WiFi Black Heater Package
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Pre-painted moldings and black base frame
- Detailed assembly instructions and video
Brochure
Installation Manual
Assembly Video
Let customers speak for us
After going the cheap route with an Aleko tub we returned that leaky thing and bought the SaunaLife Model S4. It came within a week, it was assembled and crated as described and I had it up and running the same day.
We had to move it about 100 yards into the backyard - two strong guys and PVC pipe to roll it on had it there in less than an hour. Pro tip - uncrate it, makes it easier. Assembly of the stove and chimney took another 45 min and filling it with a 5/8 hose took about an hour. Only thing that was a bit disappointing is that the holes for the chimney guide are not pre-drilled and the self tapping screws that come with it are not strong enough to drill through the stainless steel. You need to have your own metal drill bit for this.
Heated it and enjoyed the spring evening with the Mrs in the water.
Assembly easy & quick with 3 people. The glass front is VERY HEAVY @ #220 and large. Does fit through standard door. Heats well, looks great. The temperature gradient is pretty steep so I did insulate the top. Wiring the 8 Kw heater was tricky as internal bridging was required. Would buy again, good value excellent product.
Setting up this sauna was challenging-definitely follow the directions closely. A video tutorial would have helped, but the end result is worth it. The sauna looks fantastic, adds style to the backyard, and is spacious enough for four people. The quality materials and design make for a comfortable, durable experience. If you're ready for a bit of setup effort, this sauna won't disappoint!
We are so glad we purchased this sauna. It's the perfect size. And I love the red light.
Easy to use touch panel gives complete control throughout the sauna experience
I love this sauna! It's perfect for 2 people (or 3, but 3rd person has to sit horizontally and be pretty small). It heated up to 210 degrees the first time I used it. I'm an avid sauna user and it was HOT.
I had my contractors put it together. The kit arrived in a palette with a delivery service about 10 days after I placed the order. It took my contractors 1.5 days to put it together, having never done one before and it looks great!
The configuration of how the heater sits is a bit weird with the Harvia "build in control" version because the knobs face the back of the sauna and you can't really see them and sort of have to guess what position the knobs are in. I almost regret not just buying the wifi-enabled, but money was hard to justify there.
Accessories: Thermometer works great. Only thing I don't like is the bucket and ladle. The bucket doesn't come with a handle, you use the ladles as the handle and it doesn't seem secure at all when carrying water. The ladles handle also gets extremely hot to the touch (hotter than the wood in the sauna) and you need to use a towel to use it. I'm going to shop for new accessories for sure, which is annoying, but for the great deal I got on this sauna, it was worth it.
I had the same sauna priced out by a local sauna installation company and they had told me $10k all-in for sauna, heater, installation. I did this for far less buying through Premium Saunas and using my own contractor. This website offered the best price and although I was a bit skeptical about the vendor and process for delivery, it was insanely smooth and a great deal!
My wife and I have been enjoying our new Venice Elite sauna for several weeks now. We have added a 30 minute sauna into our excercise/wellness plan. We enjoy a relaxing sweat while listening to music, podcasts or just meditating.
The sauna was delivered exactly as explained by your team. It was well packaged with no shipping damage. The freight company unloaded the pallet at the end of our driveway and we were able to easily unpack the various boxes and move them into our basement individually. My wife and I assembled the sauna in about an hour without difficulty.
We highly recommend this sauna and will enjoy it for many years to come!
5 stars all around. The amazing personal custoner service, the quality build of the sauna. I don’t know where to start. I am obsessed and I’ve had it for a few weeks now. Best investment. If you’re on the fence, just do it!! You won’t regret it!!
I absolutely love my sauna. Super quick delivery. Sauna was put together and ready to go after about an hour of unpacking. I drive long commutes into work and have developed low back pain. After a week in the sauna the back pain is gone! I absolutely love my sauna.
I ordered this sauna late on a Sunday and received it 4 days later. It was in perfect packaging with no damage. The sauna was a great price and is wonderful! The communication via text with Premium Saunas was great. I will attach photos. We converted a small ugly storage room off our garage into a sauna room. This will definitely improve our resale value of our home. Thank you for the speedy delivery and for it arriving in perfect condition.
Thank you!
Thank you for the time and effort you put into this order! Daniel and Juan took exceptional care of us!
Its awesome, struggled with some improper measurements on the precut wood,
Final product is worth the struggle, went up in a say and a half
Great customer service tho
Juan is the buddy
My Sauna care very well packed. Easy to put together. Everything works as advertised. We are enjoying it very much.
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