Modular Steel Tunnel Greenhouse | Width 4m
DIY sauna for those who value warmth, privacy, and a result made with their own hands
🔥 You’re not just buying a ready-made box — you’re creating your own personal space for rest and recovery, designed to serve you for many years.
🛠 You can assemble the sauna yourself, use your own installers, or choose from installers we can recommend — you decide what works best for you.
📅 The average assembly time is around 2 days, depending on experience and working pace.
📝 A detailed step-by-step assembly manual with clear black-and-white illustrations is included, guiding you through the process without unnecessary stress.
💬 If needed, we can recommend trusted installers.
Scandinavian spruce — safe, pleasant to touch, and easy to maintain
🌲 The sauna is made from natural Scandinavian spruce — a traditional material that does not release resin when heated and is comfortable for direct skin contact.
👍 Surfaces do not become sticky or uncomfortably hot, even at high temperatures.
✨ The light, natural colour of the wood creates a clean and calming atmosphere inside the sauna.
💧 When properly treated, the wood is resistant to moisture and temperature fluctuations.
🛠 One of the key advantages of natural wood is its long-term maintainability — surfaces can be sanded, refreshed with protective oil, or re-toned over time.
🏠 Roofing and door options can be customised on request.
You can choose an alternative roofing material or a different door style to better match the look of your garden or property.
Real DIY assembly with no hidden complications
🛠 All elements are factory-prepared and precisely fitted.
📖 A step-by-step manual with clear diagrams guides you through each stage of installation.
👥 Assembly requires a minimum of two people.
⏱ The average assembly time is approximately 2 days, depending on experience and site conditions.
🔧 Some drilling and trimming of individual elements is required. Standard tools are used: a cordless drill, TORX T25 and PZ2 bits, spirit level, tape measure, hammer, knife, jigsaw, and spanners.
💬 If preferred, you can hire professional installers or use installers we recommend.
This reflects the real assembly process exactly as described in the instructions.
Traditional Wood-Fired Heat
Natural warmth and the authentic sauna atmosphere.
🌿 A real sauna is your personal recovery ritual.
Live fire, the aroma of heated timber and complete disconnection from everyday noise. This is not just heating - it’s a reset. Your sauna, your rules.
🔥 The kit includes one Etna wood-burning stove of your choice - a reliable and fuel-efficient solution for classic sauna bathing with real fire.
🛠 Available models: Etna 12 · Etna 12SN · Etna 18
🌡️ Fast heat-up and efficient fuel use
Only a few logs are needed - the sauna is ready in around 20 minutes.
🌱 Flexible fuel options
The stove works with firewood, pellets and fuel briquettes — use what suits you best.
📦 Everything you need is included:
Etna stove, protective casing, chimney, mounting elements and sauna stones.
♨️ Fully autonomous
No electrical connection required - ideal for off-grid locations.
📘 Installation and use must be carried out strictly in accordance with the manufacturer’s instructions and applicable safety regulations.
Package Dimensions | ***** |
Base Included | No Separate Base Frame Included – 4 Metal Ground Anchors Supplied |
Glazing Type | Twin-wall polycarbonate |
Warranty | 2 years |
Frame Material | Zinc-coated steel |
Growing Area | 4 m – 16 m² | 6 m – 24 m² | 8 m – 32 m² | 10 m – 40 m² | 12 m – 48 m² |
Door Type | Front and Rear Single Doors with Opening Windows |
Snow Load Capacity | Withstands light to moderate snow |
Wind Resistance | Suitable for areas with moderate wind; must be anchored securely |
Width | 4 m |
Height | 2,3 m |
Lenght | 4 m |
Frame spacing | 0,67 m (reinforced) |
Polycarbonate Thickness | 4 mm |
Help other users with the choice - be the first to share your opinion about this product.