Perfect for home gardening, remote farms, smart agriculture zones, sustainable energy projects, industrial greenhouses, farm ventilation, and educational institutions and so on Made from light weight yet aluminum, ensuring extended service life and superior resistance to wind,, and rain damage Automatic greenhouse vent opener automatically adjusts ventilation based on sunlight intensity because of indoor high temperature Effortless Installation: Simply secure the cylinder, adjust its position well, and mount on a sun-exposed area of your greenhouse frame using clamps or screws Greenhouse vent opener strength and toughness are well-balanced, allowing it to withstand large external forces without deformation or fracture, Manufacturer: BULAIDAI