VonHaus Outdoor Polytunnel with Galvanised Steel Frame Watch your plants thrive with the VonHaus garden tunnel, providing year-round protection against the elements. With a galvanised steel frame and reinforced PE cover connected with hook-and-loop straps, this greenhouse tunnel will help you grow, cultivate, and display your plants season after season. Polytunnel Greenhouse 3m x 2m Poly Tunnels for Gardens & Allotments Featuring six windows and a robust hinged door, our heavy duty polytunnel adapts to hot and cold weather conditions. Keep everything shut to maintain humidity levels within the poly tunnel green house. In warmer weather, roll up the windows and open the door to enhance ventilation. Each window features a mesh lining, designed to let air in and keep pests out. Rest assured that the walk in green house is securely grounded thanks to the ground pegs, ropes, and buried excess edges. VonHaus