【Automatic Design】his is a replacement cylinder for automatic window opener opens and closes your greenhouse window as the temperature changes automatically, maintaining the best growing temperature and prevents your greenhouse from overheating.
【Solar Energy】Using the solar energy, instead of electric, open or close the greenhouse vents as temperature rises or drops. Save your energy and time, and no need for human operation.
【Easy Installation】The window could be clamped onto or screwed onto your greenhouse frame. Please ensure your greenhouse window can be opened freely by at least 45cm 【18"】. Do not apply excessive loads by locking or covering window.
【Hydraulic Cylinder 】Our core technology is the hydraulic cylinder that contains a plant-based wax, works as the greenhouse window openers thermostat, thus there is no need for electrical power supply. So that our renowned hydraulic cylinders replaces th
【High sensitive】automatic respond to weather changes, so you don't need to stay near the greenhouse.
