This is a replacement cylinder for automatic window opener. Ideal for your greenhouse window--opens and closes your greenhouse window.
Suitable for your greenhouse window, opens and closes your greenhouse window.
Non-electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops.
As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
Suitable for your greenhouse window, opens and closes your greenhouse window. Package Included: 1/2pcs x Window Opener. Product Size(about): 1.5 x 33 cm
