Mavis Laven Window Vent Opener, Greenhouse Window Opener Vent Autovent Solar Heat Sensitive Automatic Greenhouses Roof

• 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.
• Prevent greenhouse overheating.
• Can be clamped onto or screwed onto your greenhouse frame.

Product description Specifications: Greenhouse Window Opener Kit Material: Aluminum Alloy Opening temperature: 30 ° C / 86 ° F Maximum window opening: 45cm / 18 inch Maximum opening weight: 7kg/15lb Size: Approx. 50 x 5 x 4cm / 19.69 x 1.97 x 1.57in Package: 1 x Automatic Window Opener Kit Notes: Do not use this opener anywhere the temperature will exceed 50° (122F) Please ensure your greenhouse window can be opened freely by at least 45cm (18") Do not apply excessive loads by locking or covering window Do not dismantle the cylinder The opener CANNOT stop by manual Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Safety Warning Keep out of reach of children. Avoid contact with skin and eyes. If ingested, seek medical help immediately. Do not use this opener anywhere the temperature will exceed 50° (122F). Please ensure your greenhouse window can be opened freely by at least 45cm (18"). Do not apply excessive loads by locking or covering window. Do not dismantle the cylinder. The opener CANNOT stop by manual.