The solar ventilation bottle opener can lift 15 pounds.
It can prevent your greenhouse from overheating.
Application: used to support the greenhouse window.
As an automatic temperature change, maintain the optimal growth temperature.
Prevent greenhouse overheating How to use: Automatic window opener opens and closes your greenhouse ventilator to raise or lower the temperature setting with a simple twist of the cylinder, and can be adjusted from about 65 to 80 degrees Fahrenheit as a liquid filled cylinder in a warm environment Underneath the expansion without the need to power directly into the polycarbonate sheet, wood, or metal frame.
