【Solar Automatic Vent Opener】As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating. Ideal for your greenhouse window.
【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.
【CO2 Friendly】The window opener will be very environmental and CO2-friendly throughout its whole lifetime because there is no need of electricity in your greenhouse.
【Kindly Note】This products need to be refrigerated before use it. Do not use this opener cylinder anywhere the temperature will exceed 50° (122F). Do not dismantle the cylinder.
【Durable Material】Made of quality material, durable, solid and convenient to use.
