Ouitble Greenhouse Window Opener Vent Autovent Solar Heat Sensor Automatic Greenhouses Roof Opener Greenhouse Accessories

【Anti Overheating】Opener Vent can prevent greenhouse overheating. 【Automatic】As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating. 【Non Electric】 Solar sensitive window opener uses solar energy, open or close the greenhouse vents as temperature rises or drops. 【Easy to Install】Window Opener can be clamped onto or screwed onto your greenhouse frame.