Demeras Greenhouse Window Vent Opener, Telescopic Rod, Frame Mount, Metal, Powder Coated, Modern, Green

Features: 【TEMPERATURE CONTROL】 This automatic greenhouse vent opener will automatically open and close your greenhouse window to control the temperature inside, so it can prevent greenhouse overheating. 【IDEAL FOR YOUR GREENHOUSE WINDOW】The window opener is non electric, it uses solar energy to open or close the greenhouse vents as temperature rises or drops.Energy saving and environmental protection 【AUTOMATIC CHANGE】 As the temperature changes automatically, maintains the best growing temperature .With the automatic window openers, you can be sure of an even temperature in your greenhouse day and night. So you don't have to stare at your greenhouse temperature at any time. 【DURABLE QUALITY】 This opener uses solar energy, open or close the greenhouse vents as temperature rises or drops.The window opener is made of high materials. It is very durable safe and easy to install. Specifications: Greenhouse Window Opener Kit Material: Aluminum Alloy Fully adjustable between 20 - 25 ° C (68 - 77 ° F) Maximum window opening: 45cm / 18 inch Maximum opening weight: 7kg/15lb Size: 38 x 9.5 x 9.5 cm / 14.96 x 3.74 x 3.74 inch (a ppr.) 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.