Upgraded Heavy-Duty Galvanized Frame: The tunnel greenhouse features reinforced load-bearing poles made from thickened galvanized pipes (Diameter: 1', Wall Thickness: 0.02'), enhancing overall strength and stability. Reinforced door poles, added diagonal bars, U-shaped stakes, and tie-downs increase stability and protect your plants from rain, and strong winds. Thick High-Density PE Cover: This high tunnel greenhouse uses a high-quality 140g/m² PE plastic cover that is waterproof, sun-resistant, and insulating, ensuring healthy plant growth. Double-stitched seams and reinforced window seams effectively prevent tearing. The extended PE cover edges can be weighted down or buried in soil to enhance insulation, airtightness, humidity, and temperature control. Efficient Ventilation Design: The hoop house greenhouse is equipped with 16 windows and a side-opening door for optimal airflow