Inside a Round Cube
A sauna and a front room, under one curved roof.
When we first experienced the Leil Round Cube in Estonia, we were blown away by the sensory experience: the smell of its juniper wall and a HUUM wood stove, inside that curved Thermowood shell. Up close, the quality blew us away too.
The Double keeps the shell and splits it in two. Step through the outer glass door into a front room with its own bench, a place to sit between rounds and keep towels and shoes out of the heat. A glass wall and door separate it from the sauna room, where the benches wrap around the heater in an L.
Layout and seating
Sauna room on one side, front room on the other.
The upper bench along the sauna room’s side wall is 23 inches deep: 74 inches long in the Double 2.4, enough for someone up to 6 ft tall to lie down, and 82 inches in the 2.6, up to 6 ft 10 in. A 45-inch upper bench crosses the back wall, with a lower level beneath both for your feet. Leil seats up to five in the 2.4 and six in the 2.6.
The front room has its own bench along the opposite wall, 16 inches deep and as long as the sauna’s side bench. It sits outside the heat, behind the same glass front as the sauna.
- Seats
- Up to 5 (2.4) · 6 (2.6)
- Rooms
- Sauna room plus a separate front room
- Upper benches
- 74 in (2.4) · 82 in (2.6) along the side, 45 in across the back
- Front room bench
- 74 in (2.4) · 82 in (2.6), 16 in deep
- Sauna exterior, W × D × H
- 121 × 94 × 88 in (2.4)
121 × 102 × 88 in (2.6) - Interior height
- 80 in at the center
- Sauna weight, per Leil
- 2,866 lb (2.4) · 3,086 lb (2.6)
- Heat
- Electric (packages below) or wood-burning
- Delivery form
- Kit for assembly on site
Allow room in front for the door and around the sauna for assembly and maintenance. Exterior size is the sauna size, not a foundation or clearance specification. Ask us for the dimension drawing.
Round Cube Double 2.4 and 2.6
Same shell. Choose the depth.
Both Doubles are 121 inches wide and 88 inches tall. The 2.6 is 8 inches deeper, which lengthens the side benches from 74 to 82 inches and adds a seat.
| Size | Double 2.4 | Double 2.6 |
|---|---|---|
| Exterior, W × D × H | 121 × 94 × 88 in | 121 × 102 × 88 in |
| Seats | Up to 5 | Up to 6 |
| Side benches, sauna and front room | 74 in | 82 in |
| Sauna weight, per Leil | 2,866 lb | 3,086 lb |
| Recommended heaters | HIVE Mini 9 or DROP 9 | HIVE Mini 10.6 or HIVE Mini 9 |
| Sauna kit | $16,105 | $17,290 |
| Freight to the lower 48 | $1,500 | $1,500 |
Prefer one larger room with benches facing each other? The Round Cube Single uses the same 121-inch-wide shell for one sauna room that seats six to eight.
The construction behind the comfort
Built for life outdoors, from the roof to the base.
The Round Cube shell is Thermowood, wood that has been thermally modified to take up less moisture and move less with the seasons. A black shingle roof and black-painted arches wrap the curved shape.
- 1 ½ in Thermowood walls
- Thermal modification reduces moisture absorption and wood movement, so the walls keep their fit through wet and dry seasons.
- A black shingle roof
- Shingles cover the curved roof and keep rain and snow off the wooden shell.
- Mirrored, tempered glass front
- Double mirror glass, ¾ in thick, with a tempered glass door and handle. Black and bronze glass are the alternatives.
- Three-level aspen benches
- Aspen benches with bench skirts and backrests, the pale wood you see in Leil’s photos.
- Ventilation openings
- Three to four openings bring in fresh air during a session and help the room dry afterward.
- A painted base frame
- Black-painted base frame and moldings. Leil’s manual sets the sauna above ground, with a water-resistant strip such as bitumen between its legs and the base.
Why we insist on thermally modified wood
We’ve seen outdoor sauna kits develop gaps and cracks as their wood expanded and contracted. A year later, what looked like a heater struggling to keep up was heat escaping through those gaps.
That experience changed what we sell. For our solid-wood outdoor saunas, we choose thermally modified wood for its stability and durability: a tighter fit through the seasons and less heat escaping through gaps.
Heaters
Recommended heaters for each size
Each package adds the heater, a HUUM UKU Wi-Fi control, the stones it needs and its safety rail to your cart as separate items. We mark the ones recommended for the size you choose, and you can pick any package with either size.
HUUM HIVE Mini 9 kW
Recommended for the Double 2.4 and Double 2.6
An open column of stones for soft, even steam, sized for the smaller Round Cubes.
- HUUM UKU Wi-Fi control
- Ten 33 lb boxes of HUUM stones
- HIVE Mini safety rail
- 240 V, 37.5 A, on a 50 A breaker
Package: $5,103
HUUM DROP 9 kW
Recommended for the Double 2.4
A wall-mounted heater with its stones held in a steel drop, leaving more of the floor clear.
- HUUM UKU Wi-Fi control
- Four 33 lb boxes of HUUM stones
- HUUM DROP safety rail
- 240 V, 37.5 A, on a 50 A breaker
Package: $3,686
HUUM HIVE Mini 10.6 kW
Recommended for the Double 2.6
The same open column of stones with more output for the deeper room. Leil’s chart lists it under its European name, HIVE Mini 11.
- HUUM UKU Wi-Fi control
- Ten 33 lb boxes of HUUM stones
- HIVE Mini safety rail
- 240 V, 43.75 A, on a 50 A breaker
Package: $5,231
Electrical figures are from HUUM’s US manuals. Install the heater where Leil places it and keep the clearances in its manual. A licensed electrician wires the heater and control. Leil also builds the Double for a wood-burning stove; ask us if you want one.
Choose your heaterKnow what you’re buying
The sauna, the heat, and the work on site.
Included in the sauna kit
- Thermowood walls and a black shingle roof
- Mirrored glass front and tempered glass door
- Glass wall and door between the front room and the sauna
- Front room bench
- Three-level aspen benches, bench skirts and backrests
- Black-painted arches, base frame and moldings
- Ventilation openings and Nerostep floor grid mats
Choose with your package
- The 2.4 or 2.6 size
- Mirror, black or bronze glass
- A standard Thermowood or juniper back wall
- A HUUM heater, UKU Wi-Fi control, stones and safety rail
- Leil LED lighting under the bench, along the backrests, or both
- An LED strip under the front room bench
Arrange at your property
- A stable, level base with drainage
- Moving the kit from the curb to its spot
- Assembly and exterior finishing
- A licensed electrician for the heater
- Any locally required permits
Leil’s photos show the juniper back wall, LED lighting and a HUUM heater. The sauna kit price covers the sauna itself.
Choose your size & heaterPlan the whole project
Delivery and assembly, explained up front.
01
Check access and the base
The Double 2.4 is 121 × 94 in and the 2.6 is 121 × 102 in, plus room for the door to open. Leil ships the kit in a crate 4 ft wide, 4 ft high and 10 ft 4 ¼ in long, so plan a route from the curb to the sauna’s spot.
02
Budget beyond the kit
Curbside freight to the lower 48 states is $1,500 per sauna, added at checkout. Freight does not include unloading, moving the kit into your yard or assembly. Tax, base preparation and electrical work are separate.
03
Plan the electrical work
Choose your heater first. Your electrician uses that heater’s HUUM manual for the circuit, wiring and control placement.
We confirm your delivery window with Leil when you order. When the crate arrives, inspect it and note any visible damage with the carrier before you sign.
Want help matching the sauna and heater to your plans? Book a Ben consultation or use the question form beside your package choices.
Questions
Questions about the Round Cube Double.
Do you offer installation?
We don’t install saunas ourselves, but we have installers and electricians we’ve worked with before, and we can recommend them in most areas. Send us your ZIP code and we’ll check who’s near you. You hire them directly.
What does the price cover?
The sauna kit for the size you choose, before the heater package and shipping. Each heater package adds a HUUM heater, its UKU Wi-Fi control, the stones it needs and its safety rail. Choose sauna only if you are supplying your own suitable heater.
What is the front room for?
Cooling down between rounds, changing, and keeping towels and shoes out of the heat. It has its own bench, 74 inches long in the 2.4 and 82 inches in the 2.6, and sits behind the outer glass door, with a glass wall and door between it and the sauna room.
How many people fit, and can I lie down?
Leil seats up to five in the Double 2.4 sauna room and six in the 2.6. The upper side bench is 74 inches long in the 2.4, enough for someone up to 6 ft tall to lie down, and 82 inches in the 2.6, up to 6 ft 10 in.
Which size should I choose?
The 2.4 is 121 × 94 in and seats five. The 2.6 is 121 × 102 in, seats six and has 82-inch side benches instead of 74-inch. If you want to lie down and you are taller than six feet, choose the 2.6.
Which heater should I choose?
We recommend the HIVE Mini 9 or DROP 9 for the Double 2.4, and the HIVE Mini 10.6 or HIVE Mini 9 for the Double 2.6. Every package runs on 240 V: the HIVE Mini 9 draws 37.5 A, the DROP 9 draws 37.5 A, the HIVE Mini 10.6 draws 43.75 A, each on a 50 A breaker, per HUUM’s US manuals.
What base does it need?
A level, stable base with drainage under the sauna’s support points. Leil lists the Double 2.4 at 2,866 lb and the 2.6 at 3,086 lb, before the heater, stones and bathers. Leil’s manual sets the sauna above ground level, with a water-resistant strip such as bitumen between its legs and the base. A deck needs its load capacity checked for the finished sauna, heater and bathers.
Which glass should I choose?
Mirror glass is Leil’s standard front. Black and bronze glass are tinted alternatives, and all three are the same price.
What is the juniper back wall?
Rounds of juniper set into the wall behind the benches: the patterned wall in Leil’s photos. Juniper brings its own natural scent and texture to the room. It’s the smell we remember from the Round Cube at Leil.
Can I assemble it myself?
The Round Cube Double ships as a kit for assembly on site, with Leil’s assembly manual below. A licensed electrician connects the heater.
How do I care for the wood?
Leil’s manual has you treat the interior walls and oil the benches before first use, then once or twice a year. Kits arrive without an exterior coating, so coat the outside after assembly and again about two months later. Leave the door open after a session so the room dries, and clear heavy snow from the roof.
What warranty applies?
Leil’s Round Cube manual gives 24 months on material and production defects from delivery, on the condition that Leil assembles the sauna. Talk with us about coverage for a kit you or your builder assemble.
The documents for your project.
Keep these with your assembly and electrical plans.
Round Cube Double assembly manual From Leil ↗ Round Cube Double dimension drawings Ask us with the question form →The Round Cube range
More Round Cubes.
Single 2.4 / 2.6Relax 2.0 / 2.2 / 2.6Mini 2.0 / 2.4Compare the full range →
Prebuilt
Brushes, Whisks and Body Care
Vents