4mm — Best Value
A great all-round choice for most UK gardens. Excellent light transmission and the most economical option.
Choose 4mm if: you want the best balance of performance and price.
Both options use the same heavy-duty Polyeco Classic steel frame. The main difference is insulation and price.
A great all-round choice for most UK gardens. Excellent light transmission and the most economical option.
Choose 4mm if: you want the best balance of performance and price.
The thicker polycarbonate provides improved insulation and heat retention, making it a good choice for customers wanting a little more protection from colder temperatures.
Choose 6mm if: insulation and extending the growing season are more important to you.
Still unsure? For most customers, 4mm is perfectly suitable. Choose 6mm if you specifically want the additional insulation.
Our most popular greenhouse combines strength, practical growing space and excellent value.

A heavy-duty galvanised steel frame designed for year-round use in UK conditions.

Durable polycarbonate sheets are securely fixed to the frame, creating a strong and practical greenhouse cover.

The Classic can normally be installed directly onto suitable soil or grass using its ground anchoring system.

3 metres wide and available in a range of lengths, giving you plenty of growing space without wasting your garden.

A greenhouse should be the place where you worry about whether you planted too many tomatoes — not whether the next storm is going to rearrange your garden.
The Classic was designed to be strong, practical and slightly over-engineered for the job. Once it is up, the interesting part begins: filling it with plants.
| Width | 3 metres |
|---|---|
| Available lengths | 2m, 4m, 6m, 8m, 10m and 12m and longer* |
| Ridge height | Approximately 2.18 metres |
| Frame | Heavy-duty galvanised steel |
| Cover | 4mm or 6mm twin-wall polycarbonate |
| Arch spacing | 67cm |
| Door | Stable-style door |
| Rear ventilation | Included |
| Ground anchoring system | Included |
| Concrete base required | No, when installed on suitable soil or grass |
Need a longer greenhouse? Please contact us — longer Classic models are available.
Optional extras such as automatic roof vents, shelving, raised beds and additional doors are available separately.