【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,easy to use
【Energy Efficiency】Non electric,utilizes solar energy to open or close the greenhouse vents,when the temperature rises, the cylinder expands and gently pushes the window open, when the temperature drops, the spring in the window opener pulls the air rod back, closing the window
【Compatibility】Compatible with most single spring or double spring greenhouse window openers, suitable for windows weighing less than 30lb, maximum opening distance: approximately 18 inches
【Replacement Cylinder Only】Only provides replacement cylinders for your convenience to replace the old greenhouse window opener auto cylinder, window opener is not included, please check carefully
【Note】 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
