LARGE WALK-IN GREENHOUSE: Heavy duty greenhouse is an ideal way to extend your growing season by protecting plants in the garden polytunnel from cold, mild wind, light rain, pests and birds while easily managing your plants.ROLL-UP DOOR & WINDOWS: The tunnel greenhouse's zippered roll-up door can be opened fully for easy access this greenhouse outdoor and transport of plants or tools. The 6 mesh windows provide better air circulation for plants in this large polytunnel and are resistant to bugs. They can also work as observation windows to observe the growth of plants.PE COVER: Fully closed waterproof and UV resistant PE cover maintains high humidity levels for growing tropical plants and allow nourishing sunlight to pass through this large greenhouse. The 15 cm extended edges are supposed to be deep buried in the soil to tighten the cover for greenhouse tunnel's more stability and against rainwater accumulation.STEADY STEEL FRAME: The galvanised steel frame is resistant to rust, corro