Cube SeriesCube SaunaBather Capacity: 4 Persons

SaunaLife Cube-Series Model CL5G

"4-person modern outdoor cube sauna with 81" square footprint, full glass front, and 6'3" bench length."

SaunaLife Cube-Series Model CL5G
81" square modern cube profile with floor-to-ceiling bronze glass front facade.

81" square modern cube profile with floor-to-ceiling bronze glass front facade.

Contemporary flat roof with concealed drainage and upper bench.

Contemporary flat roof with concealed drainage and upper bench.

Verified Specifications

Official Data
Exterior Footprint
81" W × 81" D × 86" H (approx. 206 × 206 × 218 cm)
Interior Chamber
75" W × 75" D × 79" H (bench length 6'3")
Timber & Species
1.65" (42mm) solid Thermo-Spruce precision staves
Benches: Thermo-Aspen bi-level benches and ergonomic backrests
Thermal Treatment
Non-toxic thermal steam curing (215°C)
Glazing Profile
Full architectural tempered bronze safety glass front wall (door and matching sidelights) (8 mm (5/16"))
Heater Power Target
8.0 kW to 9.0 kW Electric or Wood Stove
240V / 1-Phase / 40A to 50A dedicated line

Editorial Overview & Architecture Assessment

The SaunaLife Cube-Series Model CL5G is the benchmark 4-person outdoor cube sauna. Spanning an 81" W × 81" D × 86" H footprint with an interior height of 6'2" and a bench length of 6'3" (75 inches), the CL5G allows full horizontal reclining for tall adults, comfortable seating for four, and panoramic outdoor views through its full tempered bronze glass front.

Thermodynamic & Geometric Analysis

The CL5G represents the ideal architectural balance in the Cube series. The 75" clear interior bench length is the exact threshold required for flat horizontal reclining, while the cubic shape ensures that rising heat spreads evenly across the entire ceiling plane without escaping into curved dead corners.

Signature Design Features

  • 6'3" (75") interior bench length allows an adult to recline flat horizontally
  • True vertical flat walls provide full standing headroom from wall to wall
  • Floor-to-ceiling tempered bronze glass front creates an illuminated garden pavilion
  • Dual floor drainage outlets and heavy black asphalt shingle roof package

Tested Strengths

  • 75" bench length allows true flat horizontal reclining
  • Full vertical standing headroom right against the walls
  • Stunning floor-to-ceiling bronze glass front

Points to Consider Before Purchase

  • Requires 8.0 kW to 9.0 kW electrical service for optimal winter heating
  • Larger 81" square footprint requires dedicated pad space

Installation, Foundation & Electrical Planning

Field considerations compiled from architectural site assessments, electrical requirements, and European assembly tolerances.

  • 01.Requires a firm, level outdoor foundation of concrete or heavy-duty patio pavers.
  • 02.Dedicated 40A or 50A circuit required for 8kW-9kW electric heater.

Timber Care & Seasonal Preservation

  • Verify tension band tightness seasonally.

Frequently Asked Technical Questions

Can someone lie down flat on the bench in the CL5G?

Yes. With 75 inches (6'3") of clear interior bench length, an adult can lie down completely flat on either bench.

Official Engineering Documentation Sources
SaunaLife Cube CL5G Technical SpecificationsSaunaLife (Official Technical Specification). Dimensions, volumetric heating displacement, and structural loads.
Specifications last verified against SaunaLife manufacturer engineering releases: Q1 2026.
Community Verified Feedback

Owner & Community Reviews for SaunaLife Cube-Series Model CL5G

Real feedback from verified accounts, rated across build quality, thermal performance, and ergonomics.

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