Cube Saunas
Ula L Beige.The larger Ula for larger gardens.
The upsized Ula in beige-toned thermowood, 5–6 person capacity, insulated cube construction, panoramic glass front.
Overview
Ula L Cube Sauna, Beige.
The Ula L is the Classic sized up, a 3.0m long insulated cube with twin-tier hemlock benches, comfortable 5–6 person capacity, and the same warm beige-toned thermowood exterior.
It's the sauna for owners who liked the Classic's spec but need real family capacity. Twin-tier benches, full-glass front, 9kW Harvia heater sized for the larger internal volume, 100mm rockwool insulation.
Because it's insulated, the running cost per session is only marginally higher than the smaller Classic despite the bigger air volume, the 9kW heater reaches temperature in 30 minutes then holds at low duty-cycle.

Key features
What makes it different.
5–6 person capacity
Twin-tier hemlock benches, five adults comfortably, six socially.
Full-glass front wall
Panoramic toughened glass gable and door.
Beige-toned thermowood
Warm honey-natural finish, the versatile colour for most garden schemes.
Harvia 9kW heater
Sized for the larger internal volume. 30-minute warm-up.
100mm rockwool insulation
Efficient running through Scottish winters.
Hemlock interior
Knot-free western hemlock throughout.
Specification
The numbers behind the object.
- Capacity
- 5–6 adults
- External footprint
- 3.0 x 2.4 m
- Interior ceiling height
- 2.1 m
- Cladding
- Thermowood spruce, clear-oiled beige
- Insulation
- 100mm rockwool
- Lining
- Knot-free western hemlock
- Heater
- Harvia electric 9kW
- Heat-up time
- ≈ 30 minutes
- Power requirement
- 32A single-phase
- Roof
- EPDM flat
- Warranty
- 10 yr structural
Living with it
How it actually works day to day.
The step up from Classic to L is a real one. Twin-tier benches change the whole ergonomic, you can lie fully out on the upper bench while others sit on the lower, which is how a proper Scandinavian sauna is used.
The 9kW heater is right-sized for this cube. Owners who spec a smaller heater into an L find the sauna struggles to hold temperature at full capacity; the 9kW handles a six-person load without duty-cycling to 100%.
Full-glass front works even better on the L, the larger gable makes the panoramic view more dramatic.




Best for
Who typically buys this one.
- Families of 4–6 or entertainers
- Gardens where the sauna is a family amenity rather than a couple's retreat
- Buyers wanting twin-tier bench spec
- Owners who like the versatile beige finish over ebony
On-site footage
See it in motion.
Still images only tell you so much. These short clips show the Ula L Cube Sauna, Beige exactly as it sits in a finished garden, the details a spec sheet can't convey.
Ula L on-site
The Ula L curved cube sauna shown in a finished Central Scotland install. The video captures the roof curve, cedar cladding and full-glass front that give this cabin its distinctive silhouette.
Real installations
Ula L in Scottish gardens.
Every photograph on this page is a genuine Signature Garden Rooms installation.
Larger footprint (3.0 x 2.4 vs 2.4 x 2.2), twin-tier benches (vs single-tier), 5–6 person capacity (vs 4), 9kW heater (vs 8kW). Same finish, same insulation, same warranty.
Next step
Ready to talk about the Ula L Cube Sauna, Beige?
Tell us your garden, your access, and roughly when you'd like it in. We'll come back with a considered price, honest lead time, and any planning notes for your site.
Fully insured · £5m public liability · Falkirk-based, working across Central Scotland






