4m x 3m Polytunnel Greenhouse Replacement Cover - White
A cost-effective solution to refresh and extend the life of your existing 4m x 3m greenhouse frame.
- 15cm extended edges allow for secure anchoring in deep soil.
- Reinforced PE material designed to trap heat for year-round growing.
- Double-zipped door provides reliable access and closure for daily gardening.
From our curation team
Why we recommend this
Often a strong fit for
- Gardeners with a damaged 4m x 3m frame
- Extending the growing season
- Protecting seedlings from light wind and rain
Prolong the life of your 4m x 3m walk-in greenhouse with this durable white PE replacement cover. Designed to fit existing frames, this cover is a cost-effective way to restore your growing space when the original plastic becomes worn or damaged, ensuring you can continue to cultivate plants, vegetables, and herbs throughout the seasons.
- Ventilation Control: Features multiple built-in windows on each side that roll up and secure with fasteners to provide fresh air and regulate temperature.
- Protective PE Material: The white plastic cover is designed to trap heat and protect your crops from light rain and wind, creating a stable environment for healthy growth.
- Secure Anchoring: Includes an extra 15cm of material on all sides, allowing you to weigh the edges down or bury them in deep soil for improved stability.
- Easy Access: The large front door features smooth-running zips and can be rolled up and tied back for easy entry and exit while you work.
This replacement cover is specifically designed for 400cm x 300cm x 200cm frames and attaches using the included tape for a secure fit. The PE material is chosen for its ability to diffuse light while maintaining the warmth necessary for seed starting and protecting delicate plants from the elements. It is an essential update for any gardener looking to maintain their tunnel greenhouse without the expense of a full new structure.
Please note that this product includes the replacement cover only; the metal frame is not included. To ensure the best fit, we recommend measuring your existing frame carefully before purchase. This cover is intended for standard use and is not suitable for extreme weather conditions.
| Dimensions | 200H x 400L x 300Wcm |
| Door Size | 200W x 165Hcm |
| Window Size | 37L x 37Wcm |
| Material | PE Plastic |
| Colour | White |
| Extended Edge | 15cm |
| 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.
