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 air flow within the greenhouse warms, the vent steadily opens to enable the correct amount of ventilation into 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 air gets warmer, then agreements as it cools, closing with the use of a springtime and resetting the piston. All you need to do is definitely to install it on your roof vent home window and it immediately starts working. The Automatic Vent Opener works without the usage of electricity and works with with all Palram greenhouse versions only. The solar powered Vent Opener will start to open as temperature ranges inside 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 actually skylights. Works during the day and maintain a continuous interior climate, something extremely hard to achieve by manual adjustments.
Requires simply 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 most our glazed season extenders since it dramatically improves plant growth.
The hydraulic cylinder has a 1 year warranty. The common duration of the cylinder can be 5-10 years, even though some can last up to twenty years.
Screw directly into polycarbonate panels, wooden, or metal frames. THE TYPICAL Vent Opener can open 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.
Want daily information letters regarding Greenhouse Vent Opener? Please visit the website.