Product Parameters:
Replacement cylinder kit for automatic greenhouse window openers, supplied in 2 pieces. The cylinders have a black and silver appearance and are made of stainless steel and plastic. Each piece measures approximately 31.5 x 1.5 cm. The specified temperature range is 20 to 25 degrees Celsius, which corresponds to 68 to 77 degrees Fahrenheit. Please note that slight color differences may occur due to light and screen settings, and the allowed measurement deviation is plus or minus 1 to 3 cm.

Core Features:
This replacement cylinder is designed to automatically react to weather changes, helping greenhouse vents open or close as the temperature rises or falls. It operates without electricity, using solar-based thermal sensitivity for automatic control. The responsive design reduces the need for constant monitoring near the greenhouse, while supporting improved temperature conditions for plant growth.

Suitable Scenarios:
Suitable for most greenhouses that use automatic skylight opening systems. It is intended for replacing the cylinder component in automatic vent openers, making it practical for daily management of greenhouse ventilation in changing weather conditions. It can be used where automatic window adjustment is needed to support a more stable growing environment.

Product Summary:
A 2-piece replacement cylinder kit for automatic greenhouse window openers, combining stainless steel and plastic construction with non-electric, temperature-sensitive operation. It is made for automatic vent control, easy greenhouse support, and daily temperature management.