Product parameters:
Replacement cylinder kit for automatic greenhouse window openers, supplied as 2 pieces. The cylinders have a black and silver appearance and are made of stainless steel and plastic. Each part measures approximately 33 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 variations may occur due to lighting or screen display, and manual measurement tolerance is approximately 1 to 3 cm.

Core features:
This replacement cylinder is designed for automatic greenhouse window opening systems. It offers high sensitivity and automatically reacts to weather changes, which helps reduce the need for constant manual monitoring near the greenhouse. The non-electric design uses solar energy to support the opening or closing of greenhouse vents when the temperature rises or falls, contributing to a more stable growing environment.

Suitable scenarios:
Suitable for most greenhouses that use automatic roof ventilation or window opening mechanisms. It is intended for users who need a spare part for existing automatic vent openers and for greenhouse environments where automatic temperature-sensitive ventilation can help save time and labor while supporting plant growing conditions.

Product summary:
A practical 2-piece replacement cylinder kit for automatic greenhouse window openers, combining stainless steel and plastic construction with temperature-sensitive, non-electric operation. It is made for everyday ventilation needs in greenhouses and supports automatic window control based on changing temperature conditions.