6m x 3m Heavy Duty Walk-In Polytunnel Greenhouse with Galvanised Steel Frame
A large-scale growing solution that combines a rust-resistant steel frame with advanced ventilation to reliably extend your gardening season.
- Rust-resistant galvanised steel frame for long-term outdoor durability
- UV-resistant PE cover protects plants from sun scorch
- Reinforced with slant supporting rods for improved structural stability
Ends Sunday 14th June
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Delivery by 19th Jun 2026
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FREE UK mainland delivery
From our curation team
Why we recommend this
Often a strong fit for
- Vegetable allotments
- Protecting tropical plants
- Large gardens with ample space
- Seedling propagation and early starts
This 6m x 3m walk-in polytunnel provides an expansive and controlled environment for gardeners looking to extend their growing season. It features a heavy-duty galvanised steel frame and a UV-resistant PE cover designed to maintain humidity while protecting plants from light wind and rain.
- Galvanised Steel Frame: Constructed with a rust-resistant galvanised steel frame that provides structural stability and resists corrosion, chipping, and peeling.
- Temperature Control: Equipped with a roll-up zipped door and roll-up side windows to facilitate cross-ventilation and manage heat on warmer days.
- Protective PE Cover: The fully closed green PE cover filters sunlight for nourishment while maintaining the high humidity levels required by tropical plants.
- Reinforced Stability: Includes two additional slant supporting rods to improve the overall stability of the structure during mild weather conditions.
The generous 18-square-metre interior allows for easy plant management and comfortable movement while working. The roll-up mesh windows on each side provide essential airflow, preventing heat build-up that can damage sensitive crops. The walk-in design ensures that even taller plants have ample space to grow without restriction.
To ensure the longevity of the greenhouse, the cover should be removed during periods of heavy snow, strong winds, or heavy rain. This structure is specifically designed to create a microclimate for seedlings, vegetables, and tropical species, helping you to start planting earlier in the spring and continue later into the autumn.
| Overall Length | 595cm |
| Overall Width | 300cm |
| Overall Height | 200cm |
| Frame Material | Galvanised Steel |
| Cover Material | UV-resistant PE |
| Ventilation | Roll-up mesh windows and zipped door |
| Assembly Required | Yes |
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.
