Polytunnel Greenhouse Polycarbonate 8.5ft Wide

This polytunnel greenhouse provides a sheltered growing space designed to support plant development in a range of outdoor conditions. Suitable for both gardens and allotments, it helps create a more consistent environment for managing temperature and airflow. The structure offers protection from changing weather while allowing you to extend the growing season and start plants earlier. It is a practical option for maintaining steady conditions throughout the year. Key Features of This Polytunnel Greenhouse Made from galvanised steel and 6mm twin-wall polycarbonate, this greenhouse includes doors at both ends for access and ventilation. Each doorway is reinforced with steel borders to help reduce draughts, with a wide 805mm opening for ease of use. Installation does not require a separate base. The vertical beams include T-shaped anchors that are secured directly into the ground. For additional stability, angle brackets can be used to fix the frame onto a solid foundation. Designed for garden and allotment use, it provides a controlled space for growing a variety of plants. The UV-treated, double-walled polycarbonate panels are covered by a 5-year warranty. This material offers insulation and impact resistance while remaining lightweight compared to glass. Stainless steel baselines and ground-anchored vertical beams help improve the overall strength of the structure. The doors include upper ventilation sections. Opening the top portion increases airflow, helping regulate temperature and support plant conditions during warmer periods. The tear-drop shaped frame increases internal headroom while adding strength against wind exposure. Specifications Overall Width: 2.6 metres Overall Height: 2.5 metres Frame: Galvanised steel 60 x 20mm Panels: 6mm twin-wall polycarbonate Available Sizes 8.5ft x 6.5ft – Length: 2 metres 8.5ft x 13ft – Length: 4 metres 8.5ft x 19.6ft – Length: 6 metres 8.5ft x 26ft – Length: 8 metres 8.5ft x 33ft – Length: 10 metres 8.5ft x 39.4ft – Length: 12 metres Instructions are included. Installation video available. Delivery can take 5 - 10 days.