The Automatic Vent Opener was designed to automatically control the temperature and humidity levels and offer additional ventilation when needed, making gardening easier. As the surroundings in the greenhouse warms, the vent gradually opens to allow the right amount of ventilation in to the greenhouse and closes when the temperature cools. The vent arm was designed with a metallic cylinder containing wax which expands when heated to push a piston, which raises the windowpane, as the atmosphere gets warmer, then agreements as it cools, closing with the usage of a spring and resetting the piston. All you need to do is to install it on your own roof vent home window and it immediately starts operating. The Automatic Vent Opener functions without the utilization of electricity and works with with all Palram greenhouse models only. The solar powered Vent Opener will begin to open as temps within your greenhouse reach 68 degrees F with full-open at 80 degrees. It installs efficiently and will provide care-free ventilation.
Ingenious temperature-sensitive device that automatically opens and closes coldframe lids, greenhouse windows and also skylights. Works throughout the day and maintain a constant interior climate, something unattainable to achieve by manual adjustments.

Requires no batteries or electricity.
It could be adjusted to begin opening between 60-77°F. Fully open at 86-90°F. Fully closed at 55°F.
Strongly recommended for every our glazed season extenders because it dramatically increases plant growth.
The hydraulic cylinder includes a 1 year warranty. The average duration of the cylinder is 5-10 years, although some can last up to 20 years.

Screw straight into polycarbonate panels, wooden, or metal frames. The Standard Vent Opener can open up a hinged home window or vent weighing just as much as 32 lb. For bigger panes use the stronger Gigavent with all metal structure, to lift up to 65 lbs.

Note from the Greenhouse Vent Opener manufacturer: Suggested to lubricate the piston rod annual, this can help extend the duration of the hydraulic cylinder. Avoid solid grease, as dust particles “glues” easily onto the piston rod and may harm the rubber. Also do not forget to unlock the vent in the winter if leaving the vent openers set up. A good weak winter sun can high temperature the hydraulic cylinder sufficiently to make it start pushing the piston rod outwards.
This solar vent control will open and close vents, in your solar gem greenhouse. It features two closing springs for extra power. The solar vent opener may be the only solar-run control with a quick-release mounting bracket. Simply grasp the “clutch” arm and squeeze for easy detachment. This enables vent to be completely opened for usage of the interior.