Outsunny 4 x 3m Walk-In Polytunnel Greenhouse with Twin Hinged Doors and 8 Windows - Green
A heavy-duty growing solution that offers significant internal volume and superior ventilation for year-round crop protection.
- Galvanised steel frame provides a rust-resistant structural core.
- Reinforced PE cover resists tearing while allowing 85% sunlight through.
- Burying the 20cm extended edges provides a more secure, wind-stable fit.
Ends Friday 31st July
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Delivery by 14th Jul 2026
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FREE UK mainland delivery
From our curation team
Why we recommend this
Often a strong fit for
- Allotment holders
- Vegetable self-sufficiency
- Tall-growing crops
- Large gardens
A spacious walk-in greenhouse designed to provide a controlled environment for growing vegetables, plants, and flowers. This 4 x 3m structure offers a large footprint for home cultivation, protected by a durable reinforced cover.
- Galvanised Steel Frame: The strong core is built for durability and includes four additional top rods to provide extra structural support.
- Twin Hinged Doors: Features two latched doors that allow for easy access and improved workflow when moving tools and plants in and out.
- Reinforced PE Cover: The protective shell shields crops from mild weather while retaining heat, featuring a middle grid for added strength and 85% sunlight transmission.
- Eight Mesh Windows: Strategically placed windows allow for effective cross-ventilation, helping to regulate temperature and humidity inside the tunnel.
- Extended Ground Edges: Includes 20cm extended edges designed to be buried in the soil, significantly increasing the stability and wind-resistance of the structure.
This polytunnel greenhouse provides 12 square metres of growing space, making it suitable for gardeners looking to extend their growing season or protect delicate crops from the elements. The walk-in height ensures a comfortable working environment, while the dual-door design is particularly useful for managing airflow on warmer days. Built with a galvanised steel frame, it offers a reliable alternative to traditional glass greenhouses.
| Height | 200cm |
| Length | 400cm |
| Width | 300cm |
| Door Dimensions | 190H x 80Wcm |
| Frame Material | Galvanised Steel |
| Cover Material | Reinforced PE |
| Sunlight Transmission | 85% |
| Number of Windows | 8 Mesh Windows |
| Number of Doors | 2 Hinged Doors |
This product is dispatched and delivered by our approved partner, Giga from their UK warehouse.
- Cost: Delivery is FREE for all orders within mainland UK.
- Delivery Method: Please be aware that larger items are delivered kerbside (the street or pavement outside your property).
Easy Returns
Not the perfect fit? No problem. Our returns process is straightforward and completely free.
- 21 Day Guarantee: You can return your item up to 21 days after delivery.
- Online Portal: To start a return, simply visit our online portal and follow the prompts to generate your labels or schedule a collection.
For more information, please see our returns policy.
