Greenhouse Vent Automatic Opener，Window Automatic Window Opener，Solar Heat Sensitive Greenhouse Autovent Opener,Hold Up to 15 Pounds of Windows, silver

About this item Solar Automatic Window Opener The automatic window opener can adjust the size of the window according to the room temperature. As the temperature rises, the black tube inflates and expands, raising the window. The temperature drops, the window opener lowers, the window closes Suitable for Most Greenhouses The window opener can withstand up to 15.4 lb 7kg of ventilated glass and is suitable for most greenhouses. Our package includes two automatic window opener. If one automatic window opener is not enough to open your window, you can use both. Temperature range The greenhouse ventilation window opener automatically adjusts the temperature from 15°C to 25°C, suitable for all weather conditions. The maximum height of the open Windows is about 45 cm (18 in) to allow better air circulation. High quality material Our window openers are made of high-quality anodized aluminum and stainless steel and are designed with double springs for durability, robustness and long-term use. Easy to install The window opener comes with a manual for easy installation. Note: Can not be used in the temperature above 50℃ environment.