Outdoor sauna kits / Leil Round Cube / Single

Red Dot: Best of the Best 2024

Leil Round Cube Single

Benches facing each other across one open room, behind a broad mirrored glass front. 121 inches wide, in two depths, for six to eight people.

Sauna kit from$15,895

Heater added below. $1,500 curbside freight to the lower 48.

Build your package

Leil’s photos and our own, from Leil in Estonia. The juniper wall, wood stove, chimney and lighting shown are chosen with your package.

Inside the Round Cube Single at Leil in EstoniaThe Round Cube that blew us away.Look around in our 360° view →Opposing benches in a Round Cube SingleFace each other.73 in or 81 in upper benches →

Make it yours

Build your Single package

Choose the depth, then a heater. Your total shows the $1,500 freight before tax.

Compare the 2.4 and 2.6 →

Inside & outside · 360°Our photograph from Estonia

1. Choose sauna depthSee the differences

Single 2.4 · HUUM HIVE 15 kW · Leil’s recommended pairing

2. Choose a heater

Single 2.4Approximate dimensions

Exterior footprint
121″ W × 94″ D
Seating, per Leil
6–8 people
Interior depth
74.4″
Upper bench, each
73″ × 23″

Heater and decorative options are part of the package you build.

3. Review your setup

Your heater for Single 2.4

Both include the extension box, full-size heater guard and 16 boxes of rounded stones. Load stones to HUUM’s instructions and retain any surplus.

Single 2.4 sauna kit
HIVE 15 package · Wi-Fi
Sauna freight · lower 48
$1,500
Total before tax

What your price includes

Your selected sauna and every item in your heater setup are itemized below.

    Sauna finish: Thermowood, mirrored glass and black shingles.

    Delivery: $1,500 sauna freight to the lower 48 is included in the total above.

    Arrange separately: unloading your curbside kit delivery, exterior treatment, assembly and electrical installation. Remote or restricted-access delivery may cost extra. Delivery timing is confirmed with Leil.

    Kit warranty and installation

    Leil’s manual gives a 24-month warranty on material and production defects from delivery, for saunas assembled by Leil. Read the installation manual and warranty terms.

    Follow your selected heater’s installation manual for electrical supply, ventilation and clearances. The 80½″ interior height is the maximum at the center.

    Review your cart before checkout. Tax is calculated from your address.

    Checking current prices and availability…

    Need a hand? Book a Ben

    Build Your Quote:

    Leil Saunas

    2. Choose your heater

    Heaters for Single 2.4

    Choose an open stone basket, air blending, timber cladding or classic stainless steel. The heater sizes below are matched to the standard glass-front sauna.

    Start with HIVE 15, Leil’s recommended pairing. Choose Air L 15 for air blending or CORE 11 for a compact timber finish.

    Interior ceiling: 80½″ maximum at the center, lower toward the curved sides. Follow the selected heater’s installation clearances. These selections use US 240 V equipment.

    HUUM HIVE stone-basket sauna heater

    Leil’s recommendation

    HUUM HIVE 15 kW

    For Single 2.4

    An open basket of stones for generous steam. Leil recommends this full-size HIVE for Single 2.4 and 2.6.

    Your package includes a UKU Local or Wi-Fi controller, extension box, full-size guard and 16 boxes of rounded stones.

    View HIVE 15 equipment
    Saunum Air L sauna heater with air blending

    Air-blending alternative

    Saunum Air L 15 kW

    For Single 2.4

    Air blending draws heat down from the ceiling and mixes it with cooler air for more even warmth at bench level.

    Your package includes AirIQ Wi-Fi control, the Air L guard and six boxes of stones.

    View Air L 15 equipment
    HUUM CORE heater with thermo-aspen cladding

    Timber-clad alternative

    HUUM CORE 11 · 10.5 kW

    For Single 2.4

    A compact heater with timber cladding for Single 2.4. Choose CORE when you want the heater to blend into the wood interior.

    The standard centered rear position meets CORE’s height requirement. Your package includes the Thermo-Aspen CORE with a black inlay, your choice of UKU Local or Wi-Fi control and three boxes of stones.

    View CORE equipment

    Selected heater: HUUM HIVE 15 kW.

    Your heater selection stays with your sauna depth.

    Review your setup

    Heater fit & installation

    Sized for this sauna. These selections account for the standard glass front, timber construction and each heater manufacturer’s sizing rules. HIVE 15 is Leil’s recommendation for Single 2.4 and 2.6. Air L 15 covers both depths. CORE 11 is offered for Single 2.4. Harvia CLUB K15G is our Harvia choice for Single 2.6.

    Use the centered heater position. Both depths have approximately 80½″ of interior height at the center. Install on the standard floor in the rear center bay and maintain the heater manual’s wall, bench and overhead clearances. Keep CORE and CLUB at the factory floor level, without a raised platform or added overhead trim.

    Interior height and minimum room heights
    Sauna / heater Room height
    Single 2.4 & 2.6 Approx. 80½″ at the center
    HUUM CORE 11 80″ minimum
    HUUM HIVE 12 / 15 77″ minimum
    Saunum Air L 15 73″ minimum
    Harvia CLUB K15G 78″ minimum; 52″ clear above the heater rim

    Air L ventilation. Place the air outlet below the underside of the bench and leave its 20″ discharge zone clear. While the fan runs, keep adults at least 20″ and children at least 40″ from the outlet. Your installer must provide Saunum’s intake, exhaust and sensor layout during assembly.

    CLUB installation. Use the centered rear bay. Keep 6″ between the heater and walls or benches, 2½″ to the wooden safety rail and 52″ above the heater rim. Keep the rail below the rim. The package uses Xenio controls with their power unit and three 44 lb boxes of Harvia stones. The metal stone grille does not replace the wooden safety rail. Provide 45 square inches each of intake and exhaust ventilation, and install the controls and power unit in a dry indoor location.

    Electrical and stone loading. These packages use US 240 V, single-phase equipment. Have your electrician follow the exact heater and controller wiring diagrams. Load stones to the heater manual and retain any surplus.

    Changing the sauna? These choices are for the standard glass-front layout. Send us your revised plan before adding glass, tile or changing the interior so we can size the equipment for that configuration.

    Why these sizes? HIVE 18 exceeds the standard sauna’s sizing or clearance limits. Harvia Spirit 9, KIP 8, Saunum Air L 10 and Air Perfect 10 are too small once the required timber and glass allowances are included.

    Leil installation manual · HIVE US manual · CORE US manual · Air L US manual · CLUB US manual

    Layout and seating

    Room for a longer conversation.

    Two levels of benches face each other across one open room, with an aisle down the middle to the heater at the back. The broad mirrored glass front fills the room with the view, and the curved Thermowood shell gives it a place of its own in the yard.

    Leil seats six to eight in the Single 2.4 and eight in the 2.6. The upper benches are 23 inches deep: 73 inches long in the 2.4 and 81 inches in the 2.6, long enough for someone up to 6 ft 9 in tall to lie down. The Round Cube Single received a 2024 Red Dot: Best of the Best award for product design.

    Seats
    6 to 8 (2.4) · 8 (2.6)
    Upper benches
    73 in (2.4) · 81 in (2.6), 23 in deep
    Sauna exterior, W × D × H
    121 × 94 × 88 in (2.4)
    121 × 102 × 88 in (2.6)
    Interior height
    80 ½ in at the center
    Sauna weight, per Leil
    2,844 lb (2.4) · 2,932 lb (2.6)
    Heat
    Electric (packages above) or wood-burning
    Round Cube Single opposing benches, fitted wood stove and optional juniper wall during our visit.
    Face each other. Opposing benches, with the optional juniper wall and a wood stove.
    Round Cube Single bench beside the optional juniper wall with a bucket and ladle.
    Aspen benches. Shown with the optional juniper wall and lighting.

    Single 2.4 and 2.6

    Same width. Choose the depth.

    Both are 121 inches wide and 88 inches tall. The 2.6 is 8 inches deeper, which lengthens the upper benches from 73 to 81 inches.

    Round Cube Single 2.4 and 2.6 size and seating comparison
    SizeSingle 2.4Single 2.6
    Exterior, W × D × H121 × 94 × 88 in121 × 102 × 88 in
    Interior depth74 ¼ in82 ¼ in
    Seats, per Leil6–88
    Upper benches73 × 23 in81 × 23 in
    Sauna weight, per Leil2,844 lb2,932 lb
    Heater packagesHIVE 15, Air L 15 or CORE 11HIVE 15, Air L 15 or CLUB 15
    Sauna kit$15,895$16,545
    Freight to the lower 48$1,500$1,500

    Want a separate room to change in? The Round Cube Double splits the same 121-inch-wide shell into a sauna room and a front room. Benches on three walls? See the Round Cube Relax.

    Our view · Inside and out

    Step inside. Then see it from outside.

    Explore two of our 360° photographs from Leil’s terrace in Estonia: inside the Single 2.6, then the Round Cube from the front. Choose a view, then drag to look around. Short videos of the stove and the glass front are in the photo gallery.

    Inside a Round Cube

    The Round Cube that blew us away.

    When we first experienced the Round Cube on Leil’s balcony in Estonia, we were blown away by the sensory experience: the smell of the juniper wall, opposing benches and a wood stove, all inside that curved Thermowood shell. It was a Round Cube Single 2.6, the sauna in our photos, and Leil has confirmed the model.

    Watch our 79-second walk around Leil’s display saunas

    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.
    Three-level aspen benches
    Aspen benches with bench skirts and backrests, the pale wood you see in the 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.

    Round Cube Single timber rear wall and fitted chimney in winter.
    Thermowood back wall, shingled shell. Shown with a wood stove’s chimney.
    Curved glass front and shingled side of a Leil Round Cube Single 2.6 m on Leil’s terrace in Estonia
    The curved glass front. Our photo of the Single 2.6 on Leil’s terrace.

    Know 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
    • Three-level aspen benches, bench skirts and backrests
    • Black-painted arches, base frame and moldings
    • Ventilation openings and Nerostep floor grid mats

    Choose in the builder

    • The 2.4 or 2.6 depth
    • A HUUM HIVE 15, Saunum Air L 15, HUUM CORE 11 or Harvia CLUB 15 package, with its control, stones and guard

    Black or bronze glass, LED lighting, the juniper wall or a wood stove and chimney? Ask us and we’ll add them.

    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, or a permitted wood-stove installation
    • Any locally required permits

    The photos show the juniper wall, lighting and a wood stove. The sauna kit price covers the sauna itself, with Leil’s standard mirrored glass.

    Choose your depth & heater

    Plan the whole project

    Delivery and assembly, explained up front.

    01

    Check access and the base

    The Single 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, shown in your total. Freight does not include unloading, moving the kit into your yard or assembly. Tax, base preparation and electrical work are separate.

    03

    Plan the heat

    Choose your heater first. Your electrician uses that heater’s manual for the circuit, wiring and control placement; a wood stove needs a permitted chimney installation.

    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 the builder.

    Questions

    Questions about the Round Cube Single.

    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 starting price cover?

    The Single 2.4 sauna kit, before the heater package and freight. In the builder, choose the depth and a heater package: the HIVE 15 package adds its UKU control, extension box, guard and 16 boxes of stones, and the Saunum Air L 15 package adds AirIQ Wi-Fi control, the Air L guard and six boxes of stones. Your total shows the $1,500 freight before tax.

    Which heater should I choose?

    HIVE 15 is Leil’s recommended pairing for both depths. The Saunum Air L 15 suits both and blends the air for more even heat at bench level. The HUUM CORE 11, clad in timber, is offered for the 2.4 and the Harvia CLUB 15 for the 2.6.

    Can I lie down?

    Yes, on the upper benches: they are 73 inches long in the 2.4 and 81 inches in the 2.6, 23 inches deep. In the 2.6, someone up to 6 ft 9 in tall can lie down.

    Which depth is shown in the 360° view?

    The Single 2.6 on Leil’s balcony, with its juniper wall and wood-burning heater. The 2.4 is 8 inches shorter front to back; plan with the measurements for your size.

    Can I have a wood-burning stove?

    Yes. The Single in our photos and 360° view has a wood stove and chimney. Ask us and we’ll put the stove, chimney and the parts it needs on your order.

    What base does it need?

    A level, stable base with drainage under the sauna’s support points. Leil lists the Single 2.4 at 2,844 lb and the 2.6 at 2,932 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 comes with it?

    Leil’s standard mirrored glass. Black and bronze glass are tinted alternatives; ask us if you want one.

    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 Single installation manual From Leil ↗ Leil Round Cube catalogue The whole range ↗ Single 2.4 and 2.6 dimension drawings Ask us with the question form →

    The Round Cube range

    More Round Cubes.

    Relax 2.0 / 2.2 / 2.6Double 2.4Double 2.6Mini 2.0Mini 2.4Compare the full range →