Large Tunnel Greenhouse: The Reliable Guardian of Your Plants Large Tunnel Greenhouse: The Trustworthy Protector of Your Plants Built with thickened galvanized steel pipes and a robust PE cover, this tunnel greenhouse guarantees durability and stability. It has three top beams to prevent snow accumulation and reinforced side braces for better stability, standing firm against harsh weather. The UV - resistant, cold - proof, and waterproof PE cover, along with mesh windows to keep insects out, creates an ideal environment for your plants. With its spacious size, multiple windows for ventilation, and adjustable Velcro windows, it maintains optimal airflow and protects your plants for healthy growth. Upgraded Sturdy Galvanized Frame Thick High - Density PE Covering Spacious Walk - In Structure Efficient Ventilation System Key Features Upgraded Sturdy Galvanized Frame: The load - bearing poles of this tunnel greenhouse are made of reinforced galvanized pipes (Diameter: 1", Wall Thickness: