Automatic Greenhouse Window Opener Solar Heat Sensitive Invernadero Automatischer Window Opener Kit Agricultural Garden Tools Buyer's Feedback show Single Spring Kit Features: Prevent greenhouse overheating. 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. Can be clamped onto or screwed onto your greenhouse frame. 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: Approx. 38x9.5x5cm / 15.0x3.7x2.0in Package:1 x Automatic Window Opener KitNotes: 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 exceive 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 pos may be showing slightly different from the real object. Please take the real one as standard. Double Spring Kit Description: Prevent greenhouse overheating. 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. Can be clamped onto or screwed onto your greenhouse frame. Important notice: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 exceive loads by locking or covering windowDo not dismantle the cylinder The opener CANNOT stop by manualSpecifications: Maximum window opening: 45cm Maximum opening about: 30 depending on adjustment and load Maximum opening weight: 7kg/15lb Adjustable open temperature range: 15- 25/60-77F Size: 38 x 9.5 x 9.5 cm / 14.96 x 3.74 x 3.74 inch (appr.) Package included:1 x Automatic window openerNote:Due to the upgrade of this item, the 11th part showed in manual is not included. Please take the real one as standard. Window Opener Kit Features: Perfectfor 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. Can be clamped onto or screwed onto your greenhouse frame. Please makesure your greenhouse window can be opened freely by at least 45cm (18"). Specifications:Greenhouse Window Opener KitMaximum window opening 45cmMaximum opening about 30, depending on adjustment and loadMaximum opening weight 7kg/15lbAdjustable open temperature range 15- 25/60-77FPackage:1# Automatic Window Opener Kit / Replacement Greenhouse Window Opener Cylinder (You can choose what you want)Notes: Do not use this opener anywhere the temperature will exceed 50 (122F) Please makesure your greenhouse window can be opened freely by at least 45cm (18") Do not apply exceive 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 pos may be showing slightly different from the real object. Please take the real one as standard. Opener Cylinder A Features: This is a replacement cylinder for automatic window opener. High sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse. Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. Great for most greenhouse to open or close window automatically. Time and labor saving, also can supply a better temperature condition of plant's growth. Specifications:Condition: 100% Brand NewMaterial: ABSColor: BlackTemperature Range: 20-25 / 68-77Size: Approx. 33 x 1.5cm / 12.99 x 0.59inWeight: Approx. 117gMaximum Opening Distance: Approx. 45 cm / 18inAdjustable Length: Approx. 33-45cm/ 13-18inApplication: For Under 14 Kg WindowPackage Included:1 x Window Opener Cylinder OnlyNote:1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in pos may be showing slightly different from the real object. Please take the real one as standard.3.No battery or electricity required, need to be refrigerated before use. Opener Cylinder B Features:Made of quality material, durable and convenient to use.As the tempera