Mikrokos Solar Greenhouse Window Opener Heat Sensitive Greenhouse Vent Opener Automatic Greenhouses Roof Opener Kit Lifts

Solar Greenhouse Window Opener prevent greenhouse overheating. 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. Solar Greenhouse Window Opener can be clamped onto or screwed onto your greenhouse frame.