Product features:
1. Solar vent opener can lift up to 15 lbs.
2. It prevents overheating of your greenhouse.
3. When the temperature changes automatically, it maintains the best growth temperature and prevents overheating of the greenhouse.
Instructions for use:
Automatic window opener opens and closes your greenhouse vents.
Increase or lower the temperature setting with a simple turn of the cylinder and the adjustment can be adjusted from approx. 65 to 80 degrees.
No electrical energy is required as the cylinders filled with liquid expand in the upper temperatures.
Screw directly into polycarbonate panels, wood or metal frame.
Place the cylinder in a cool place at max. 50°F for at least 30 minutes before assembly.