The Outdoor Sauna That Looks Like It Was Designed by an Architect — And Performs Like It Was Built by One.
The SaunaLife Cube-Series Model CL7G is not a traditional cabin sauna. It is a modern architectural statement — a clean-lined cube with straight walls, a full panoramic bronze-tinted tempered glass front, and an 85.5-inch interior height that stands over 7 feet tall, giving it the spatial presence of a room rather than a box. Handcrafted in Northern Europe from thermally modified Thermo-Spruce — wood that has been heat-treated to become dimensionally stable, naturally decay-resistant, and impervious to warping, cracking, and pest damage without the need for chemical treatment or annual staining — the CL7G is built to look exceptional and perform reliably for decades with minimal maintenance. Inside, knotless Thermo-Aspen facing benches with arched ergonomic backrests seat up to 6 adults in a social, face-to-face configuration designed for group sessions. The hexagonal Thermo-Spruce roof and integrated side vents create a natural chimney ventilation effect — fresh air enters at the base, stale heat exits through the top — producing consistent, even heat distribution with no hot spots. Wi-Fi controlled dotless LED lighting, a shingled roof with drip rails, and a striking square wood-handle door complete a sauna that genuinely transforms a backyard into a wellness destination.
Key Specifications
- Series: Cube-Series (distinct from Garden-Series)
- Capacity: Up to 6 persons
- Type: Traditional outdoor sauna DIY kit
- Origin: Designed by SaunaLife, handcrafted in Northern Europe
- Wall & Ceiling Material: Thermally modified Thermo-Spruce — heat-treated for dimensional stability, decay resistance, and weather durability
- Bench & Backrest Material: Knotless Thermo-Aspen — contoured seating, arched ergonomic backrests, cool to the touch
- Bench Configuration: Facing benches — social group orientation
- Exterior Dimensions (W×D×H): 91 in × 86.6 in × 93 in
- Interior Dimensions (W×D×H): 87.5 in W × 70.8 in D × 85.5 in H
- Interior Volume: 306 cu ft
- Interior Height: 85.5 in — over 7 feet
- Door: 27.2 in × 74.4 in — 8 mm bronze-tinted tempered glass, square wood handle
- Glass Front: Full panoramic UV-protected bronze-tinted tempered glass front wall
- Roof: Shingled roof with shingle kit and drip rails for superior water management
- Ventilation: Hexagonal Thermo-Spruce roof + side vents — natural chimney gravity airflow system
- Lighting: Wi-Fi app-controlled dotless white LED lighting + wireless handheld remote (IP20 rated)
- Heater: Not included — minimum 50 lbs of sauna stones required (sold separately)
- Shipping Weight: 2,040 lbs (pallet: 90 in W × 44 in D × 47 in H)
- Delivery: Curbside LTL freight by scheduled appointment
Who This Is For
The CL7G is built for buyers who want a 6-person outdoor sauna that looks completely different from every other backyard structure on the street — a contemporary architectural piece that commands attention and elevates the entire outdoor space. It suits design-conscious homeowners who find traditional cabin saunas too rustic for their aesthetic, buyers who want Thermo-Spruce's superior heat-treatment durability over standard spruce without annual maintenance obligations, groups of 4–6 who want the social experience of facing bench configuration for shared sauna sessions, and anyone who has stood inside a cramped outdoor sauna and immediately wanted more ceiling height. The 7+ foot interior is not a minor detail — it fundamentally changes how the space feels for extended wellness sessions.
Frequently Asked Questions
Q: What makes Thermo-Spruce different from standard Nordic Spruce used in the Garden-Series kits? A: Thermo-Spruce is standard spruce that has been thermally modified — subjected to a controlled high-heat treatment process that permanently alters the wood's cellular structure. The result is a material that is significantly more dimensionally stable (resists swelling, shrinking, and warping with moisture and temperature changes), naturally resistant to decay and biological degradation without chemical treatment, and requires no annual staining or UV treatment to maintain its structural integrity. Garden-Series models use untreated Nordic Spruce — excellent quality, but requiring periodic exterior maintenance. The CL7G's Thermo-Spruce is the low-maintenance, long-term durability choice.
Q: How does the natural chimney ventilation system work in practice? A: The CL7G's hexagonal Thermo-Spruce roof combined with side vents creates a passive gravity ventilation circuit — cooler fresh air enters near the floor level, heats up and rises, and exits through the upper roof vents. This produces a continuous convective airflow that distributes heat evenly throughout the 306 cu ft interior without mechanically forced ventilation. In practice, it eliminates the hot spots at head level and cold zones at floor level that poorly ventilated saunas produce, resulting in a more consistent and comfortable heat experience across the entire session.
Q: What is the difference between the CL7G and the Garden-Series G4 in terms of capacity and size? A: Both seat up to 6 persons, but the CL7G's interior is dramatically different in feel. The CL7G offers 85.5 inches of interior height — over 7 feet — versus the G4's lower profile cabin ceiling. The CL7G's modern cube shape with straight walls creates a more open, architectural interior space, while the G4's traditional cabin design produces a cozier, lower-profile atmosphere. Material-wise, the CL7G uses Thermo-Spruce versus the G4's untreated 1.75" Nordic Spruce. Design preference and aesthetic goals are the primary deciding factors between these two at similar capacity.
Q: Does the bronze-tinted glass affect visibility or heat retention? A: The bronze tinting provides UV protection that reduces glare and sun-related heat gain through the glass panel while maintaining a clear panoramic view of the outdoors. It also adds a refined, premium aesthetic that distinguishes the CL7G from clear-glass designs. The glass itself is 8mm tempered — the same safety standard as the Garden-Series models — and the dual-wall thermal construction around the glass front maintains interior heat retention at the same performance level as the solid walls.
Q: Does this require a heater to be purchased separately? A: Yes — the CL7G ships as a structural kit without a heater. A minimum of 50 lbs of sauna stones is also required and sold separately. SaunaLife recommends electric heaters sized for the CL7G's 306 cu ft interior volume. Compatible heater options are available at HomeUpgradeDirect.
Q: What foundation and site preparation does the CL7G require? A: A level, stable, load-bearing foundation is required — concrete pad, reinforced deck, or compacted gravel base are the standard options. The site must support significantly more than the 2,040 lb shipping weight when fully loaded with bathers. A forklift or crane will be needed to offload and position the sauna from the delivery pallet. Electrical access for both the heater circuit and lighting circuit should be planned before delivery day.
