WElinks Carbon Steel Greenhouse Window Automatic Vent Opener, Solar Heat Sensitive Window Roof Autovent Vent Opener Standard- Lifts 15 Lbs

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Product Features

Material: Galvanized carbon steel sheet and aluminum Ideal for your greenhouse window--opens and closes your greenhouse window as the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating Non Electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops Important notice:Do not use this opener anywhere the temperature will exceed 50° (122F)

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