About
The TETRA aluminium greenhouse orangery is a highly practical, quadrangular structure featuring a four-sided pyramid-style roof, elevated sidewalls, and a double sliding door. Its elegant lines and sharp right angles create an exceptionally efficient and spacious interior layout, closely resembling the shape of a room in a house. This familiar form enhances comfort and functionality, making it an inviting extension of your living space.
This remarkable orangery enhances the charm of modern gardens year-round, providing a stylish and functional retreat regardless of the weather.
It is particularly popular among restaurant, café, and hotel owners seeking to create inviting outdoor dining or lounge areas.
Additionally, it serves as an excellent choice for outdoor classrooms, garden studios, or creative spaces, seamlessly blending beauty with practicality.
Standard Features of the TETRA Greenhouse Model
- Width: 309 cm, 383 cm, 457 cm
- Length: 309 cm, 383 cm, 457 cm
- Wall height: 201 cm (standard), 211 cm
- Construction: aluminium - sturdy and stable, crafted from closed-type solid profiles
- Fasteners: stainless steel
- Colour (frame): mill finish aluminium or any colour selected from the RAL Classic palette.
- Glazing: glass (4 mm, tempered, clear) or/and polycarbonate (10 mm, twin-wall, clear)
- Glazing rubbers: EPDM, black
- Door: double sliding in the front wall*
- Windows: in walls, with a mechanical handle*
- Rainwater downspouts and gutters: integrated, 2 pcs.
- Foundation: integrated aluminium base profile
- Installation: the structure can be installed on the ground, on a terrace/site, or on a wall-type foundation**
Note: Roof material of Tetra-457 cm - 10 mm polycarbonate (clear).
* Other options available.
Are you looking for a greenhouse of non-standard dimensions and configuration? Send us your request.

- The glazing materials used in our greenhouses are selected for their exceptional quality, durability, practicality, and strength. All materials comply with EN quality and safety standards, ensuring long-lasting performance, reliability, and peace of mind for year-round use.
- We recommend choosing between tempered glass or twin-wall polycarbonate, depending on your specific needs and preferences. For greater versatility, consider a hybrid approach – combining tempered glass and polycarbonate on different walls of the structure. This allows you to achieve the perfect balance of aesthetics, insulation, and light diffusion for optimal greenhouse performance.
- For more detailed information and advice on our greenhouse glazing materials, including care, replacement, and additional tips, please refer to the "F.A.Q." section below.
Install the greenhouse yourself
All GARDENIS greenhouses are designed for DIY (Do It Yourself) assembly, allowing you to construct the greenhouse independently after purchase.
Each package includes:
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Detailed assembly instructions in English, Lithuanian, Latvian, Estonian, Polish, Slovak, and Russian
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A comprehensive packing list
Before starting installation, carefully review the safety guidelines, required tools, and the step-by-step assembly instructions.
After assembly, please follow the usage and maintenance recommendations to ensure long-term durability and optimal performance of your greenhouse.































