Window Opener - Delaman Greenhouse Window Opener Vent Autovent Solar Heat Sensitive Automatic Greenhouses Roof

MAIN FUNCTION --- This Greenhouse Window Opener Kit is designed to prevent greenhouse overheating. USEFUL TOOL --- Our Window Opener will help you to open and close your greenhouse window,Ideal for your greenhouse window. ESEENTIAL TOOL --- The Automatic Window Opener Kit working as the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating. SAVE EMNERGY --- Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops.