Auto Vent Opener, Automatic Greenhouse Window Opener Cylinder Roof Vent Opener Autovent Kit Solar Heat Sensitive Agriculture Gardening Tools - Lifts 15 Lbs

【Optimal Ventilation】Your plants are optimally ventilated through temperature-controlled opening and closing. Depending on the temperature, the piston of the cylinder moves and opens or closes the window., 【Prevent Your Greenhouse】As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating, 【Individually Adaptable】This greenhouse window opener can be installed quickly and easily for the windows of common garden and greenhouses. You can steplessly adjust the opening angle by turning the cylinder and thus achieve the right ventilation for your bed., 【Automatic Open/Close】There is non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops, 【Multifunctional Application】Automatic Window Opener is ideal for your greenhouse window--opens and closes your greenhouse window