Leil Black Cube 4-Person Cabin Sauna

Constructed from 1.57-inch thick thermally treated pine walls, the Leil Black Cube offers impressive dimensional stability and insulation for year-round outdoor use. The thermal modification process removes moisture and resins from the wood, resulting in a rich tone that stands up well to the elements. Inside, the two-level alder benches feature integrated skirts and low thermal conductivity, meaning they stay comfortable to the touch even at high temperatures.

Electrical requirements depend heavily on your setup. A standard 6 kW electric heater is recommended for the solid back wall configuration, which requires a dedicated 240V line with a 30-amp breaker. If you opt for the rear panoramic window upgrade, heat loss increases, requiring an upsized 9 kW heater and a 50-amp breaker. You will need to budget for a certified electrician to complete the hookup, as heaters and wiring are sold separately from the kit.

Arriving as a DIY kit, assembly takes a team of two to three people roughly six to eight hours using basic power tools. The package includes pre-cut panels, a heavy 8mm tempered glass front, a square shingle roof, and a Nerostep plastic floor mat. While compact with an exterior footprint of 86 by 65 inches, its square shape maximizes internal headroom and bench space effectively.