About this item

• Cylinder Replacement Parts: Only available for cylinder replacement, convenient for you to replace the old greenhouse window opener automatic cylinder, does not include the window opener, please check carefully
• Non Electric: Utilizing solar energy to open or close greenhouse vents during temperature changes. When the temperature rises, the cylinder expands and gently pushes open the window. Once the temperature drops, the window opener spring will pull the air rod back and the window will close
• Applicable Temperature: The temperature range is 15 ° C to 25 ° C (60 ° F to 77 ° F), suitable for all weather conditions. Do not use replacement cylinders in places where the temperature exceeds 50 degrees Fahrenheit (122 degrees Fahrenheit)
• Attention: If the product does not shrink when it is cold or hot, it may be because the product has reached its maximum length during high-temperature transportation. Just put the product in the refrigerator and refrigerate for a while before use
• Compatibility: Compatible with most single spring or double spring greenhouse window openers. Suitable for windows weighing less than 14 KG. Maximum opening distance: approximately 45 cm/18 inches