A Naturally Ventilated Polyhouse (NVPH) with a GI (Galvanized Iron) pipe structure is an agricultural greenhouse designed to optimize plant growth using natural ventilation. The framework is made of galvanized iron pipes, ensuring durability and resistance to rust. It features vents or openings for air circulation and is covered with transparent polythene sheets that provide protection from rain, pests, and harsh weather while allowing sunlight to penetrate. Benefits include durability, as GI pipes offer high strength and resistance to corrosion, ensuring a long lifespan. It is cost-effective, requiring minimal maintenance and reducing energy costs by using natural ventilation. It is sustainable, eliminating the need for mechanical ventilation and reducing the carbon footprint. It provides crop protection by shielding plants from adverse weather, pests, and diseases. It improves yield by maintaining a controlled environment for better crop growth and productivity. It has versatile use, being suitable for cultivating vegetables, flowers, and seedlings, including off-season crops. Lastly, it offers ease of installation, as GI pipe structures are easy to assemble and dismantle, making them practical for various farming needs.