Ouitble Auto Vent Opener Kit, Automatic Window Opener Solar Heat Sensitive Greenhouse Autovent Roof Vent Opener Agriculture Gardening Tool

【Vent Opener】Auto Vent Opener is perfect for your greenhouse window‑‑opens and closes your greenhouse window 【Temperature Sensitive】As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating 【Durable】Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops 【Applied Scenario】Automatic Window Opener can be clamped onto or screwed onto your greenhouse frame