Large walk-in greenhouse: Heavy duty greenhouse is an ideal way to extend your growing season while easily managing your plants in garden polytunnel and protecting them from coldDrainage/circulation function: 1 Large opening adjustable roll-up window on each side of the tunnel greenhouse for cross ventilation on hot days and drain away water and reduce pressure to the greenhouse outdoor frameGreen PE cover: Fully closed waterproof UV resistant PE cover maintains high humidity levels for growing tropical plants and allow nourishing sunlight to pass through this large polytunnelHeavy-duty steel frame: This large greenhouse is constructed with a heavy duty galvanised steel frame in stable build, resistant to rust, corrosion, chipping and peeling. 2 extra supporting rods to add this polytunnel large stability and make the greenhouse tunnel more stableDimensions: Poly tunnels Gardening Overall Size: 3L x 2W x 2H M. Assembly Required. NOTE: Not suitable for bad weather conditions.