Tefola Solar Heat Sensitive Automatic Greenhouse Window Vent Opener - Auto Roof Vent for Greenhouses, Gardens & Plant Protection (Perfect for Temperature Control in Small to Medium Greenhouses)

Specifications:Greenhouse Window Opener KitMaterial: Aluminum AlloyMaximum window opening: 45cm / 18 inchFully adjustable between 20 - 25 ° C (68 - 77 ° F)Maximum opening weight: 7kg/15lbAdjustable open temperature range: 20°- 25°/68°-77FSize: 32 x 9.5 x 5 cm / 12.6 x 3.74 x 1.97 inch (appr.)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 windowDo not dismantle the cylinderThe opener CANNOT stop by manualMonitors 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.

【Function】Prevent the greenhouse from overheating.

【Suitable for】Fit your greenhouse windows - open and close your greenhouse windows.

【Change with Temperature】With the automatic change of temperature, maintain the best growing temperature and prevent the greenhouse from overheating.

【Non-Electric】Use solar energy to open or close greenhouse vents as the temperature rises or falls.

【Stable Performance】Can be clipped or screwed to your greenhouse frame.